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Add the Opposite
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Add the Opposite
📚 Part 1: Multiple Choice
1. Which expression shows 8 − 5 using the "add the opposite" method?
8 + (−5)
8 − (−5)
−8 + 5
5 + (−8)
2. Which shows 4 − 7 written as an addition?
4 + (−7)
4 − (−7)
−4 + 7
7 + (−4)
3. The temperature was 5°C and then dropped by 8°C. Which equation uses add the opposite?
5 + (−8)
5 − (−8)
−5 + 8
8 + (−5)
4. Which is equivalent to 9 − (−2)?
9 + 2
9 + (−2)
9 − 2
−9 + (−2)
✏️ Part 2: Short Answers & Working
5. Convert to addition and solve: 7 − 13 = ________
6. Draw a number line to show 4 − 6 using add the opposite (4 + (−6)). Sketch below and write the answer.
7. Sarah had $10 and then she owes $13. Write the subtraction equation, convert it to adding the opposite, and find her balance.
8. Match each subtraction expression (left) with the equivalent addition expression (right). Draw lines to match.
A. 6 − 9
B. −3 − 4
C. 2 − (−5)
D. 0 − 7
1. −3 + (−4)
2. 6 + (−9)
3. 2 + 5
4. 0 + (−7)
9. In one sentence, explain why subtracting a number is the same as adding its opposite.
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