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Unit 5: Addition and subtraction within 100

2,300 possible mastery points

About this unit

In this unit, you'll learn about adding and subtracting numbers within 100. But don't worry, we're going to make it super fun. You'll practice skip counting by 5s and 10s, use colorful place value blocks, and explore number lines. Plus, you'll solve cool word problems and even some 2-step challenges.

Practice

Level up on the above skills and collect up to 480 Mastery points
Level up on the above skills and collect up to 720 Mastery points
Level up on the above skills and collect up to 160 Mastery points
Level up on the above skills and collect up to 400 Mastery points
Up next for you:

Unit test

Level up on all the skills in this unit and collect up to 2300 Mastery points!