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Unit: Addition and subtraction

0

Possible mastery points

Adding 1s and 10s

Learn

Practice

Add 1 or 10Get 5 of 7 questions to level up!
Add 1s or 10s (no regrouping)Get 5 of 7 questions to level up!

Intro to addition with 2-digit numbers

Learn

Practice

Add within 20 visuallyGet 5 of 7 questions to level up!
Add within 20Get 5 of 7 questions to level up!
Break apart 2-digit addition problemsGet 3 of 4 questions to level up!
Regroup when adding 1-digit numbersGet 5 of 7 questions to level up!

Quiz

Level up on the above skills and collect up to 480 Mastery points

Intro to subtraction within 20

Learn

Practice

Subtract within 20 visuallyGet 5 of 7 questions to level up!
Subtract within 20Get 5 of 7 questions to level up!

Up next for you:

Unit test

Level up on all the skills in this unit and collect up to 800 Mastery points!

About this unit

First, we will learn how addition and subtraction relate. Next, we will add and subtract numbers less than or equal to 20 and solve addition and subtraction word problems. Finally, we will begin adding 2-digit numbers.