Problem 3 · 2021 Math Kangaroo
Easy
Arithmetic & Operations
order-of-operations
When you put the 4 puzzle pieces together correctly, they form a rectangle with a calculation on it. What is the result of this calculation?
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Answer: B — 15
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Hint 1 of 2
The four jigsaw pieces fit into one row, so the symbols line up left to right into a calculation.
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Hint 2 of 2
Arrange 3, 2, 1 and + so the tabs match, then read the calculation and work it out.
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Approach: assemble the pieces into a valid calculation and evaluate
- The pieces 3, 2, 1 and + interlock into a single row.
- Matching the tabs, the 1 and the 3 sit together to make 13, then the + and the 2 follow: 13 + 2.
- 13 + 2 = 15.
- So the result is 15 (B).
Mark:
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