Original PromptTwo-Digit Addition with Regrouping
Objective Use base-ten blocks to add two-digit numbers
with regrouping.
Materials base-ten blocks (tens, ones), 10-Frame (page 3)
There are many ways to add with regrouping that do not use the traditional addition algorithm. Working from
an understanding of a ten being the same as 10 ones, children can break apart two-digit numbers into tens
and ones and add them separately. Before using the standard algorithm, children should understand that it is
sometimes n...
This learning resource focuses on teaching students addition and subtraction of two-digit numbers using the method of regrouping. The objective is for students to effectively use base-ten blocks and 10-frames to model the addition of two-digit numbers, particularly when regrouping is necessary. It involves a series of structured activities that guide students through the process of adding without regrouping, recognizing when to regroup, and performing subtraction without regrouping, using visual aids for better understanding. Activities include practical examples where students solve addition and subtraction problems, analyze regrouping scenarios, and practice mathematical modeling with base-ten blocks.