A student gets 23 × 14 = 552 by writing 92 + 460. What is the mistake?

Q: What will my child learn in "Critique a multiplication error"?

Look at whether each row multiplies the top factor correctly. This 5th Grade Math lesson builds the skill Multiply with the standard algorithm with a concept card and practice.

Q: What grade level is "Critique a multiplication error" for?

"Critique a multiplication error" is a 5th Grade Math lesson in the Multiply whole numbers unit, designed for students around ages 10-11.

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Question

A student gets 23 × 14 = 552 by writing 92 + 460. What is the mistake?

Accepted Answer

The second partial product should be 230, not 460.