Problem 1 · 2011 Math Kangaroo
Easy
Arithmetic & Operations
order-of-operations
Which of the following calculations gives the biggest result?
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Answer: D — 1 + 2011
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Hint 1 of 2
Do not compute everything fully — just see which option grows the value the most.
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Hint 2 of 2
Multiplying by 1 changes nothing, and dividing by a big number makes it tiny, so compare 2011 with 1+2011.
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Approach: compare the five values
- Read each option as a number: 201×1=201, 20×1×1=20, 1×2011=2011, 1+2011=2012, and 1÷2011 is just under 1.
- The two big ones are 2011 and 2012; adding gives the larger.
- So 1+2011=2012 is the biggest.
Mark:
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