Problem 1 · 2022 Math Kangaroo
Easy
Arithmetic & Operations
order-of-operations
What is \((20+22) \div (20-22)\)?
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Answer: B — -21
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Hint 1 of 2
Work out each bracket on its own first.
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Hint 2 of 2
The top is 20+22 and the bottom is 20-22; one of them is negative.
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Approach: evaluate the two brackets, then divide
- The numerator is 20+22 = 42.
- The denominator is 20-22 = -2.
- 42 divided by -2 is -21, so the answer is B.
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