In this activity, we will find the missing number in a calculation.
Example
Find the missing number in the sum.
134 + ___ + 22 = 160
Answer
Step 1: Add together 134 + 22 = 156.
Step 2: Work out what you need to reach 160 by calculating 160 - 156 = 4
So,
134 + 4 + 22 = 160
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Question
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Teacher explanation