A step-by-step tutorial showing how to subtract using two-digit numbers in the tens and ones columns with regrouping. Includes sample problems to try. It also provides links to subtraction games and more.

Step-by-step tutorial showing how to subtract numbers less than 1000 in place value columns with and without regrouping. Includes sample problems to try.

Demonstrates how to subtract two 4-digit numbers when there is regrouping. The explanation is followed by an interactive where students can practice this skill.

Short tutorial showing how to subtract using two-digit numbers in tens and ones columns without regrouping.