5 NBT 7 Decimal Addition and Subtraction Practice Sheets Solutions Guide

Align decimal points before calculating and rewrite each problem vertically to keep place values consistent. This prevents common errors when combining tenths hundredths and thousandths.

Tasks focus on addition and subtraction using base ten models expanded form and written algorithms. Check that regrouping occurs only when a smaller place value cannot be removed without borrowing.

Confirm results by inverse operations such as adding a difference back to the subtracted number. Consistent units precise alignment and clear notation match classroom scoring expectations.