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 Subtracting Whole Numbers
WN08 Whole Numbers Subtraction
WN09 Reverse_Subtraction
WN10 Addition and subtraction of Whole Numbers
WN11 Missing values in Addition and Subtraction
WN12 Find the Missing Addends
AL16 Solving Equations by Addition or Subtraction
EQ01 Solving_Equations with variables in both sides
Addition and subtraction are opposite operations so you can use one to check the other. If A + B = C, then C – B = A
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Word Problems – Using Whole Numbers
Write your own word problem:
Problem Solving Format