What term describes moving a group of numbers from one place value to another to solve a math problem?

• A. Regrouping
• B. Borrowing
• C. Rounding
• D. Estimating

Answer: (A)

Regrouping is moving a group of digits from one place value to another to make a calculation work. In addition, when the digits in a column total 10 or more, you carry a ten to the next column, shifting value between place values. In subtraction, you regroup by borrowing from the next higher place value when you don’t have enough in a column. This process of moving digits between tens, ones, hundreds, and so on is exactly what the description is describing.

Borrowing is a specific kind of regrouping used during subtraction. Rounding and estimating, on the other hand, are about adjusting numbers to easier, approximate values rather than moving digits between places.