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Unit 2: Addition and subtraction without regrouping
900 possible mastery points
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Quiz
Unit test
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- 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!
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Practice
- Subtract 1 or 10Get 5 of 7 questions to level up!
- Subtracting 1s or 10s (no regrouping)Get 5 of 7 questions to level up!
Level up on the above skills and collect up to 320 Mastery points
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Practice
- Adding up to four 2-digit numbersGet 3 of 4 questions to level up!
- Break apart 2-digit addition problemsGet 3 of 4 questions to level up!
Level up on the above skills and collect up to 160 Mastery points
Learn
Practice
- Add within 100 using a number lineGet 3 of 4 questions to level up!
- Subtract within 100 using a number lineGet 3 of 4 questions to level up!
- Add and subtract on the number line word problemsGet 3 of 4 questions to level up!
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Level up on all the skills in this unit and collect up to 900 Mastery points!