Subtract

Subtracting Whole Numbers.

Subtraction means take away (it is opposite of addition). The answer in a subtraction problem is called the difference. Subtrahend is the number to be subtracted from another number (the minuend)            minuend – subtrahend = difference

minus

 

 

 

To find the difference between two numbers, sometimes you need to regroup, or borrow, from another number. Example:

Borrow

 

 

 

 

When the digit in the subtrahend is larger, decompose 1 unit of higher value into 10 units of the next lower value, and regroup.

MKY3

Subtract Whole Numbers

Reverse_Subtraction

Add and Subtract Whole Numbers

Solving Equations with Whole Numbers

Solving Equations by Addition or Subtraction

 

Addition and subtraction are opposite operations, so you can use one to check the other.  If A + B = C, then C – B = A

CheckAdd

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MKY3

Word Problems – Using Whole Numbers 

Word problems vocabulary

Whole Numbers Subtraction

Write your own word problem:

Word problem Writing Template

Problem Solving Format