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





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






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



Subtraction Concept

Properties of Subtraction

Subtracting Whole Numbers 1

Subtracting Whole Numbers 2

Subtracting Whole Numbers 3

Subtracting Whole Numbers 4

Subtracting Whole Numbers 5

WN07    Subtract_Integers

WN09    Reverse_Subtraction

WN10    AddSubWN

WN11    MissingASWN

WN12    Missing Addends

EQ01      Solving_Equations


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






Word Problems – Using Whole Numbers 

Word problems vocabulary

WN08    Whole Numbers Subtraction

Write your own word problem:

Word problem Writing Template

Problem Solving Format