Content code
m1629
Slug (identifier)
subtracting-numbers-elementary
Parent content
Numbers Operations | Elementary
Grades
Grade 1
Grade 2
Grade 3
Grade 4
Equivalent file in the opposite grade group
Subtraction
Topic
Mathematics
Content
Title (level 2)
1st and 2nd Grade
Title slug (identifier)
first-and-second-grade
Contenu
Contenu
Title
What is subtraction?
Content
Content
Corps

Subtraction is an operation that removes one quantity from another.

Corps

In subtraction, the starting number and the number being subtracted are called terms. The answer to the subtraction is called the difference.

Content
Image
What are the numbers of a subtraction called?
Corps

To find out what the “|-|” and “|=|” symbols mean, read the Lexicon of Mathematical Symbols concept sheet.

Title
How to subtract numbers using objects or drawings
Content
Corps

Several types of objects can be used to represent numbers. For example: toy cars, tokens, and pencils can help with calculations.

Content
Corps

|7-3=?|

I have |7| footballs and I need to subtract |3|.

Image
Example of Subtraction with one-digit Numbers - 1
Corps

To find the number of remaining items, I remove |3| items from the |7| items.

Image
Example of Subtraction with one-digit Numbers - 3
Corps

I then get |4| items.

Content
Corps

|52-48=?|

  1. I begin by representing the starting number.

    The starting number is |52|.

 image

 

  1. Next, I subtract the second number from the starting number.

    If I do not have enough ones to perform the subtraction, I have to regroup a ten from the starting number and turn it into ones.

    I now have |4| tens and |12| ones. I can now subtract |8| ones from |12| ones.

    |12-8=4|

 imageimageimageimage

 

  1. I now subtract the tens.

    |4-4=0|

    There are no more digits to subtract in the other place value positions.

 image

 

|52-48=4|

Video
Soustraire des nombres (1re et 2e année)
Contenu
Title
See also
Content
Links
Type
Internal
Title
Finding a Missing Term in an Addition
Internal link
/en/students/vl/mathematics/finding-a-missing-term-in-an-addition-elementary-m1…
Type
Internal
Title
Finding a Missing Term in a Subtraction
Internal link
/en/students/vl/mathematics/finding-missing-term-subtraction-m1730
Type
Internal
Title
Lexicon of Mathematical Symbols
Internal link
/en/students/vl/mathematics/lexicon-of-mathematical-symbols-elementary-m1700
Title (level 2)
3rd and 4th Grade
Title slug (identifier)
third-and-fourth-grade
Contenu
Contenu
Title
What is a subtraction?
Content
Content
Corps

Subtraction is an operation that removes one quantity from another.

Corps

In subtraction, the starting number and the number being subtracted are called terms. The answer to the subtraction is called the difference.

Content
Image
What are the numbers of a subtraction called?
Title
How to subtract numbers using columns
Content
Content
Corps

  1. I write the numbers one below the other, lining the digits up according to their place value.

  2. I subtract the ones and write the resulting ones digit below the line. If I do not have enough ones to do the subtraction, I regroup a ten.

  3. I repeat step 2 for all positions. I make sure to use the new number if I need to regroup.

Content
Corps

|872-61=?|

  1. I write the numbers one below the other by lining up the digits according to their place value.

 image

 

  1. I subtract the ones and write the resulting ones digit below the line. If I do not have enough ones to do the subtraction, I regroup a ten.

    |2-1=1|

 image

 

  1. I repeat step 2 for all positions. I make sure to use the new number if I need to regroup.

    I subtract the tens.

    |7-6=1|

    I subtract the hundreds. Since the second term does not have any hundreds, I write |8| below the line.

    There are no more digits to subtract in the other place value positions.

 imageimage

 

|872 - 61 = 811|

Content
Corps

|923 - 416 = ?|

  1. I write the numbers one below the other by lining up the digits according to their place value.

 image

 

  1. I subtract the ones and write the resulting ones digit below the line. If I do not have enough ones to do the subtraction, I regroup a ten.

    I have to do |3 - 6.| As I do not have enough ones, I regroup |1| ten. I write the number of remaining tens above the digit in the tens position.

    I now have |1| ten and |13| ones.

    |13-6=7|

 imageimage

 

  1. I repeat step 2 for all positions. I make sure to use the new number if I need to regroup.

    I subtract the digits in the tens position.

    |1-1=0|

    I subtract the digits in the hundreds place.

    |9-4=5|

    There are no more digits to subtract in the other place value positions.

 imageimage

 

|923 - 416 = 507|

Video
Subtracting Numbers (3rd and 4th grade)
Contenu
Title
See also
Content
Links
Type
Internal
Title
Finding a Missing Term in an Addition
Internal link
/en/students/vl/mathematics/finding-a-missing-term-in-an-addition-elementary-m1…
Type
Internal
Title
Finding a Missing Term in a Subtraction
Internal link
/en/students/vl/mathematics/finding-missing-term-subtraction-m1730
Type
Internal
Title
Lexicon of Mathematical Symbols
Internal link
/en/students/vl/mathematics/lexicon-of-mathematical-symbols-elementary-m1700
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