Numbers for 1st grade
1st grade math problems | Parenting
Remember the shape puzzles your child toyed with — using triangles to make squares and rectangles? Turns out, that was good practice for first grade math problems.
By the end of first grade math, here are the 11 key skills your child should learn:
- Counting to 120 — starting anywhere, like from 3 or 72.
- Adding and subtracting numbers up to 20.
- Knowing that this sign “=” means equal.
- Solving word problems with three one-digit numbers (e.g. 2 + 3 + 9) that add up to 20 or fewer.
- Understanding why addition and subtraction are the reverse of each other.
- Adding up to 100, including adding a two-digit number and a one-digit number (e.g. 82 + 7).
- Knowing how to add two-digit numbers based on place value.
- Adding or subtracting 10 using mental math (e.g. 31 plus 10 is 41).
- Starting to measure things, such as figuring out how many of his footprints can fit into his dad’s footprint.
- Telling and writing time to the hour and half-hour (e.g. 1:00 pm and 1:30 pm).
- Putting two shapes together to create a new shape, and dividing shapes into two and four parts.
First grade math: Counting
Counting to 100 — that’s for kindergartners. First graders count to 120, but the catch is that they can start from any number, like 72, and count up to 73, 74, 75, and so on. Kids also learn to subtract numbers up to 20, like 19 – 7 = 12. Students learn to solve word problems using objects, drawings, and, yes, even equations. For example, if Ted has 4 pencils, Danielle has 6 pencils, and Vicki has 9 pencils, how many pencils do they have all together?
Your first grader may first draw this problem and count the pencils, but by the end of the year she’ll know the equation — and how to solve it.
First graders also learn the relationship between counting, addition, and subtraction. For example, counting from 1 to 2 is the same as adding 1 + 1.
Adding one more means counting up one, and adding two more means counting up two, and so on. Likewise, subtraction can be thought of as counting down or backward. Taking that a step further, kids learn to think of subtracting as the reverse or “undoing” of adding. So, for example, if 15 + 4 = 19, then 19 – 4 = 15.
First grade math: Place value
In kindergarten, your child started to learn about place value using tens and ones. In a two-digit number like 19, the 1 represents the tens and the 9 represents the ones. Now, your first grader will build on that by learning to add a two-digit number, like 54, and a one-digit number, like 5, or two-digit number that’s a multiple of 10, like 10, 20, 30, 40, etc.
One strategy your child will learn is to add the tens and ones separately.
For example: 54 + 5 = 50 + 0 = 50 and 4 + 5 = 9 for a total of 59.
And sometimes, it’s necessary to create a ten from the ones.
For example: 54 + 7 = 50 + 0 = 50 and 4 + 7 = 10 + 1.
Move the 10 to the tens, so it’s 50 + 10 = 60 and 1 for a total of 61.
Your child will also be expected to figure out in her head — without counting — how to find 10 more or less than another number. If Jemma has 68 lollipops and gives away 10, she should know that’s the same as subtracting one group of tens, leaving her with 58 lollipops.
First grade math: measurement
First graders should be able to explain how long two objects are by comparing them to a third object. For example, the first piece of paper is shorter than the second piece, but longer than the third.
Kids start applying the concept of addition to measuring things. Let’s say your child uses the dog’s tail to measure the length of a blanket; he might find that the blanket is 5-and-a-half tails long. This is great practice for when the kids start using rulers.
First graders also learn to tell time (and write it down correctly, like 1:30 pm) to the nearest hour and half-hour by reading both digital clocks and the old-fashioned round clocks with minute and hour hands.
First grade math: shapes
First graders delve into the properties of shapes by combining two shapes to form a new one, such as putting two triangles together to make a square or rectangle. They’ll do this on paper (2 dimensional) and with objects (3 dimensional).
Kids also learn to divide shapes into or two or four equal parts and learn the words for those parts: halves and quarters (or fourths).
So break out the blocks and Legos and have a blast while you can still practice all of your child’s math skills at home while playing on the floor.
- What to expect in a first grade math curriculum.
- See what knowing the ones and tens places looks like in this first grade math Milestones video.
- Can your first grader solve a word problem like this?
Math Resources / 1st Grade Numbers
Combinations to 10
Making Ten - Using a Ten Frame is an introduction to decomposing numbers to ten.
Math Monsters- The Making of Ten The math monsters work together to show combinations of ten.
- MA 1.1.2 Operations: Students will demonstrate the meaning of addition and subtraction with whole numbers.
* MA 1.1.2.b Use objects, drawings, words, and symbols to explain addition as parts of a whole - MA 1.1.3 Computation: Students will compute fluently and accurately using appropriate strategies and tools.
* MA 1.1 .3.d Use a variety of methods and tools to compute sums and differences (e .g., models, mental computation, paper-pencil)
Fact Families
A video about a group of numbers that are related to each other. This video teaches that numbers can be combined to create multiple equations.
- MA 1.3.3 Procedures: Students will use concrete. verbal. and visual representations to solvenumber sentences.
*MA 1.3.3.a Write number sentences to represent fact families
*MA 1.3.3.b Use concrete,pictorial, and verbal representations of the commutative property of addition
Number Line
This video shows students how to use a number line. When the Math Monsters run a towing company, they must devise a way to locate where cars have broken down on the road. Watch them perfect their system of landmark numbers to make their job easier. http://tinyurl.com/MathMonstersQuickTime
- MA 1.1.1 Number System: Students will demonstrate, represent, and show relationships among whole numbers within the base-ten number system.
*MA 1.1.1.a Count,read,and write numbers 0 –100
*MA 1.1.1.i Compare and order whole numbers 0- 100
*MA 1.1.1.j Demonstrate relative position of whole numbers 0- 100 (e.g.,52 is between 50 and 60; 83 isgreater than 77)
Parts/Whole
Part Part Whole example to solve a problem.
- MA 1.1.2 Operations: Students will demonstrate the meaning of addition and subtraction with whole numbers.
* MA 1.1.2.b Use objects, drawings, words, and symbols to explain addition as parts of a whole
* MA 1.1.2.d Use drawings, words, and symbols to explain subtraction as finding part of a whole
Ten Frame
- MA 1.1.3 Computation: Students will compute fluently and accurately using appropriate strategies and tools.
* MA 1.1 .3.d Use a variety of methods and tools to compute sums and differences (e .g., models, mental computation, paper-pencil)
Riddles about numbers for grade 1 with answers, in rhymes
The process of learning numbers may seem boring to some children. It is not surprising that often they do not show any interest in him.
You can fix this problem with the help of exciting tasks, for example, riddles about numbers.
The best themed puzzles prepared especially for first graders can be found on this page. Here are interesting puzzles for curious boys and girls. Use them to replenish the piggy bank of knowledge of the crumbs, give him important information, develop logical thinking, the ability to concentrate on details.
READ ALSO: Children's logic puzzles for 4-5 years old.
Riddles about the number 0
The numbers stood up like a detachment
In a friendly numerical row.
The first role in order
The number will play for us ...
Zero.
He looks like a bun, he is pot-bellied and round. It looks like a Cat, if it folds into a ball.
Zero.
It looks like the letter O,
It doesn't mean anything.
But any number at once
will increase ten times.
Zero.
The ball jumps through the pages.
He is looking for his sister,
What looks like a ring -
Without beginning and end.
Zero.
Riddles about the number 1
Sister with a cunning nose
Will open the account ...
One.
You won't score a goal so easily,
There is a stake on the gate.
And you can't fight him in battle,
This is a number...
One.
Tall as a stick,
And with a big ponytail,
Always the first everywhere -
Number ….
One.
She looks like a stalk,
Stands respectfully, like a nobleman.
Straight, always straight,
It goes after zero.
Unit.
Riddles about the number 2
Flexibly bends the neck, And beautiful and slender, Deftly raises her tail, What kind of number? Digit…
Two.
Flexibly bends her neck,
Both beautiful and slender,
Deftly lifts her ponytail,
What is the number? Digit...
Two.
Serezha has a pencil
And Dasha has one more.
How many do the kids have
For two pencils?
Two.
Black, tailed
Doesn't bark, doesn't bite,
A from class to class
Doesn't let.
Two.
With a light stroke of the pen A number appeared…
Two.
Riddles about the number 3
What a miracle! Come on, come on,
Look better -
It seems to be a letter,
But also a number ...
Three.
Guess this number!
She's a big nerd.
Add one with two,
And get a number ...
Three.
This figure is simply a miracle.
She has relatives everywhere.
Even the alphabet has
She has a twin sister.
Three.
I'll ask you to count:
Subtract five from eight,
Let's say the result
Together, in chorus - it will be ...
Three.
About bears and about brothers,
Pigs, heroes,
This figure is in these fairy tales,
Already present, believe me!
Three.
INTERESTING: Funny riddles for children 4-5 years old.
Riddles about the number 4
Like a sail in the wind,
It looks like a flag,
Even with the letter “H”,
This number is similar!
Four.
Two little mice gnawed at the crust,
Two - they dragged the cheese into the mink.
How many of them do we have in the apartment?
Two plus two - total ...
Four.
Someone turned an old chair upside down at night
.
And now in our apartment
He became a number ...
Four.
This figure looks like a beautiful sail! The number is getting bigger and bigger…
Four.
We decided to make a film about numbers,
They started turning on the cameras.
Where does the letter H come from on the air?
Don't be afraid! Number I!...
Four.
Riddles about the number 5
If you turn TWO over
And look carefully,
Look this way and that again,
Then we get the number ...
Five.
Don't be lazy at school:
Draw, write, study,
Answer at the lessons -
And put in the diary…
Five.
In a meadow among the forests
There were exactly seven cows
Two of them went for a walk
And there were cows left ...
Five.
What is at the end of the page,
Decorating the entire notebook?
What can you be proud of?
Well, of course, in numbers...
Five.
How many fingers are on the hand,
Rays in the starfish,
This figure will tell you,
At the same time, it looks like a sickle!
Five.
Riddles about the number 6
If a padlock
raises the proboscis,
Then we will see here
Not a lock, but a number ...
Six.
I made a parade,
I'm in formation like a soldier!
And there is a clear order -
After five steps...
Six.
There is a ring, there is a tail,
There is a number with a loop...
Do not step here with your paw, bird, -
You may not be free.
Six.
Tsiferka, like a hippopotamus, her belly is round, deftly bends her neck, steps after the five.
Six.
And my friend Tonya
Had a chance to sit on a pony,
And Tony, together with a pony
Got legs at once ...
Six.
Riddles about the number 7
She looks like an axe,
But she doesn't chop wood into the yard.
Like a braid, but not quite,
It's just a number...
Seven.
I am a number less than ten.
I'm easy to find.
But if you order the letter “I” to stand next to you,
I am everything: father, and you, and grandfather, and mother…
Seven.
It looks like a scythe, but it cannot mow the grass - it is not sharpened at all and the number does not mow ...
Seven.
We have a proverb
And everyone knows it -
You cut off only once,
And you need to measure ...
Seven.
This number is the happiest of all,
This number is the most beautiful of all.
She knows the days of the week,
She is friendly with the rainbow
We sang it with friends:
She is friends with notes.
Seven.
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Riddles about the number 8
The figure looks like a toy -
Roly-poly rattle.
Do not hit her on the ground.
Everyone understands - this is ...
Eight.
This number is a secret. Both in winter and in hot summer you can barely distinguish where the legs and head are in it.
Eight.
Two rings on top of each other,
Two daring fellows.
Let's ask for
in their numerical series And we'll get a number…
Eight.
Two circles stood side by side -
What wonderful glasses?
Turn even upside down,
They are the same!
Eight.
Two rings, but no end,
There is no nail in the middle.
If I roll over,
I won't change at all.
Well, what number am I?
Eight.
Riddles about the number 9
The number six turned over,
Turned into a new number!
Nine.
This number is so cunning,
Turn it over,
Miracles will begin -
You will see the number six!
Nine.
Know the six we have an acrobat -
Upside down it will be ...
Nine.
Look at the number like this,
It has a trick -
Turn it over,
And you'll get the number six!
Nine.
This number is not simple,
Like a big comma.
Friendly with frogs -
She's a tadpole!
Nine.
Riddles about the number 10
Early in the morning by the river
Cornflowers blossomed.
Five - on the left bank.
Five - on the right bank.
I am cornflowers
I can easily count.
Because five yes five
How much will it be, how not to know?
Ten.
Zero, stand behind one,
Behind your own sister.
Only in this way, when you are together,
You will be called ...
Ten.
My brother teaches me how to count
-What will be 5 and 5
I thought a little
And said:
- Two palms!
And how many will be 5 and 5
You have to count your fingers.
Ten.
If you substitute a steering wheel to a stick,
That's bold, you can say,
What happened ...
ten.
A girlfriend is standing,
A friend is nearby,
When they are together,
The result is a number…
Ten.
Digit zero - empty space
Or simply - nothing.
Zero swelled up in protest,
To be noticed.
Nulik! Zero! No need to get angry.
Hurry up for the unit.
Only in this way, when you are together,
There will be whole ...
Ten.
Table of digits and classes of numbers in mathematics
Numbers and figures
Numbers are counting units. With the help of numbers, you can count the number of objects and determine various values.
Special characters are used to write numbers - numbers . There are ten of them in total: 1, 2, 3, 4, 5, 6, 7, 8, 9, 0.
The natural numbers are the numbers that we use when counting. Here they are: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, …
- One (1) is the smallest number, and there is no largest number.
- Zero (0) means no item. Zero is not a natural number.
The name of a number depends on the number of digits.
A number that consists of one character is called single digit . The smallest single digit is 1, the largest is 9.
A number that consists of two digits is called two-digit . The smallest two-digit number is 10, and the largest number is 99.
Numbers written with two, three, four or more digits are called two-digit , three-digit , four-digit , or multi-digit .
The smallest three-digit number is 100, the largest is 999.
Each digit in a multi-digit number takes a certain place - position .
Solve your math homework for 5.
Detailed solutions will help you understand the most difficult topic.
Classes of numbers
Digits in the notation of multi-digit numbers are divided from right to left into groups of three digits each. These groups are called classes . In each class, the numbers from right to left represent the units, tens, and hundreds of that class.
Class table:
Names of classes of multi-digit numbers from right to left:
- the first is the class of units,
- second - thousand class,
- third - million class,
- fourth - billion class,
- fifth - trillion class,
- sixth - quadrillion class,
- seventh - quintillion class,
- the eighth is the sextillion class.
To make it convenient to read a multi-digit number entry, a small gap is left between the classes. For example, to read the number 125911723296, it is convenient to first highlight the classes in it:
- 125 911 723 296.
And now read the number of units of each class from left to right:
- 125 billion 911 million 723 thousand 296.
When reading a class of units, you do not need to add the word "units" at the end.
Digits of numbers
The position of a digit in a number entry determines its value. For example:
- 1 123 contains: 3 ones, 2 tens, 1 hundred, 1 thousand.
We can put it another way and say that in a given number 1123, the number 3 is in the ones place, 2 is in the tens place, 1 is in the hundreds place, and 1 is the value of the thousands place.
Let's clarify what a discharge is in mathematics. The digit is the position or location of the digit in the notation of a natural number.
Each category has its own name. The higher digits always live on the left, and the lower digits always live on the right. To remember faster, you can use a table.
The number of digits always corresponds to the number of digits in the number. This table has the names of all the digits for a number that consists of 15 characters. The following digits also have names, but they are rarely used.
The lowest (lowest) digit of a multi-digit natural number is the units digit.
The highest (highest) digit of a multi-digit natural number is the digit corresponding to the leftmost digit in the given number.
Bit units are designated as follows:
- Units are units of the first digit (or simple units) and are written in the first place on the right.
- Tens - units of the second digit and are written in the number in second place from the right.
- Hundreds are units of the third digit and are written in third place from the right.
- Units of thousands - units of the fourth digit and are written in fourth place from the right.
- Tens of thousands are units of the fifth digit and are written in fifth place from the right.
- Hundreds of thousands - units of the sixth digit and are written in the number in the sixth place from the right, and so on.
Every three consecutive digits constitute a class. The first three digits: units, tens and hundreds, form a class of units (first class). The next three digits: units of thousands, tens of thousands and hundreds of thousands - form the class of thousands (second class). The third class will be units, tens and thousands of millions and so on.
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Let's practice
Example 1.
Write down the number that contains:
- 55 units of the second class and 100 units of the first class;
- 110 units of the second class and 5 units of the first class;
- 7 second class units and 13 first class units.
Answer:
- 55 100;
- 110 005;
- 7 013.
All digit units, except for simple units, are called compound units . Every ten units of any digit equals one unit of the next higher digit:
- 10 units equals 1 ten;
- 10 tens equals 1 hundred;
- 10 hundreds equals 1 thousand;
- 10 thousand equals 1 ten thousand;
- 10 tens of thousands are equal to 1 hundred thousand;
- 10 hundred thousand equals 1 million.
To find out how many units of any digit are in a number, you need to discard all the digits denoting units of the lowest digits and read the number that is expressed by the remaining digits.
Example 2. How many hundreds are there in 6284?
As we argue:
In the number 6284, the number 2 is in third place in the class of units, which means that there are two hundred in the number.
The next digit on the left is 6, meaning thousands. Since every thousand contains 10 hundreds, 6 thousand of them contain 60.
This means that this number contains 62 hundreds.
The number 0 in any digit means the absence of units in this digit.
Simply put, the number 0 in the tens place means the absence of tens, in the hundreds place - the absence of hundreds, etc. In the place where 0 stands, nothing is pronounced when reading the number:
- 11 627 - eleven thousand six hundred and twenty seven.
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