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CEMC Gauss (Grade 7), 2015 Difficulty 1.1 Junior Find the answer Canada
The value of 10 × ( 5 − 2 ) 10\times(5-2) 10 × ( 5 − 2 )
Pick one
A 13 13 13 B 70 70 70 C 7 7 7 D 30 30 30 E 50 50 50
Solution Evaluating, 10 × ( 5 − 2 ) = 10 × 3 = 30 10\times(5-2)=10\times3=30 10 × ( 5 − 2 ) = 10 × 3 = 30
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