Problem 1 · 2018 Math Kangaroo
Easy
Arithmetic & Operations
order-of-operations
Which result is obtained by the calculation \((20 + 18) : (20 - 18)\)?
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Answer: B — 19
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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 colon means divide: simplify the top sum and the bottom difference, then divide.
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Approach: evaluate each parenthesis, then divide
- The first bracket is 20 + 18 = 38.
- The second bracket is 20 − 18 = 2.
- Then 38 : 2 = 19.
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