Khan Academy
Khan Academy: Break Apart 3 Digit Addition Problems
Practice breaking apart big addition problems using place value. For example, 234+567 is the same as 200+500+30+60+4+7. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive...
Other
Nearpod: Subtraction With Regrouping: Three Digit
In this lesson on subtraction, students will use the break apart strategy, draw a model, or the standard algorithm to subtract 3-digit numbers.
Other
Nearpod: Subtraction With Regrouping: Two Digit
In this lesson on subtraction, students will use the break apart strategy, draw a model, or the standard algorithm to subtract 2-digit numbers.
K-5 Math Teaching Resources
K 5 Math Teaching Resources: Division Strategy: Partition the Dividend [Pdf]
Break numbers apart as a strategy to divide.
Khan Academy
Khan Academy: Adding 53+17 by Making a Group of 10
Sal adds 53+17 by breaking apart the numbers and making a group of 10. [3:35]