# 1.4.4. Relation between Addition and Subtraction

Complete the equations using all the numbers in the triangle with repetition when needed.

• A3, 2, 3, 2, 3
• B3, 2, 2, 5, 2
• C2, 5, 3, 3, 2
• D3, 5, 2, 5, 2
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Which of the following is equal to ?

• A
• B
• C
• D
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A park has a slide with 3 steps, and Ahmed climbed step. If it is needed to know how many more steps must he climb, will you add or subtract the numbers? After that, make the calculation.

• A subtract, 3 steps
• B subtract, 2 steps
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Mona and Sally, each of them swam across the pool 3 times. If you want to know how many times both of them swam across the pool, will you make an addition or a subtraction? Also, find the result of the calculation.

• A subtract, 0 times
• D subtract, 3 times
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Given that 4 girls sat on a bench, and 4 boys sat on another bench. If you want to know how many children sat on the benches, will you make an addition or subtraction? Also, find the result of the calculation.

• A subtract, 4 children
• C subtract, 8 children
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Find the two numbers whose sum is 8 and difference is 4.

• A3, 6
• B4, 6
• C6, 2
• D7, 2
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Complete the table below.

NumberMinus 2Plus 2
31
24

• A5, 0
• B1, 0
• C5, 4
• D1, 4
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If Soad is 2 years old, Amir is year older than Soad, and Hanan is years older than Amir, how old is Hanan?

• A6 years old
• B7 years old
• C8 years old
• D3 years old
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