Multiple Choice
Which calculation does NOT show how to mentally calculate 16 × 25?
A) 4 × 4 × 5 × 5 = 4 × 5 × 4 × 5 = 20 × 20 = 400
B) (10 × 25) + (6 × 25) = 250 + 150 = 400
C) (16 × 20) + (16 × 5) = 320 + 80 = 400
D) 4 × 100 = 400
E) This calculation is impossible to do mentally.
Correct Answer:
Verified
Correct Answer:
Verified
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