Starter quiz
- Which number represents the subtrahend in this equation? 31 − 10 = 21
- 31
- 21
- 10 ✓
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- What is the difference between 19 and 21?
- '2' ✓
- What is 100 − 30 = ______
- '70' ✓
- What is 200 − 50 = ______
- '150' ✓
- Calculate the missing number is this equation: 40 + ___ = 220
- 160
- 170
- 180 ✓
- 200
-
- Which pairs of numbers have a sum of 600?
- 100 and 400
- 200 and 500
- 300 and 300 ✓
- 200 and 400 ✓
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