Question

explain why in paper - and - pencil addition and subtraction the terms trading and regrouping are used instead of the terms carrying and borrowing. choose the correct answer below. a. the words all mean the same so each student can pick which works best for them. b. the terms regroup and trade match more closely to the physical actions done with manipulatives. c. the terms carry and borrow match more closely to the physical actions done with manipulatives. d. the terms regroup and trade are more accurate than carry and borrow.

Explanation:

When using manipulatives like base - ten blocks in teaching addition and subtraction, the actions of trading (exchanging one unit of a higher value for ten units of a lower value or vice - versa) and regrouping (rearranging the units) are physical actions that are better described by the terms "trading" and "regrouping".

Answer:

B. The terms regroup and trade match more closely to the physical actions done with manipulatives.