A lesson about subtracting mixed numbers with like fractional parts using the strategies for the subtraction of regrouping and subtracting in parts (piece by piece).

In this exercise, students practice adding two-digit numbers by making tens. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.

Subtract with 2 numbers less than 1000. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.