Subtracting with Base 10 Blocks: Practice regrouping in two-digit and three-digit subtraction problems using visual models.
Worksheet titled "Subtracting with Regrouping with Base 10 Blocks. Part 1" from Kids Academy, showing two subtraction problems (482 - 164 and 753 - 329) using base 10 blocks to illustrate regrouping, with multiple-choice answers.