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Unit: Addition and subtraction
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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.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!
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!
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:
Level up on all the skills in this unit and collect up to 800 Mastery points!