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Unit 3: Addition and subtraction with regrouping
900 possible mastery points
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- Regroup when adding 1-digit numbersGet 5 of 7 questions to level up!
- Add 2-digit numbers by making tensGet 3 of 4 questions to level up!
- Add within 100 using place value blocksGet 3 of 4 questions to level up!
Practice
- Subtract within 100 using place value blocksGet 3 of 4 questions to level up!
Practice
- Find the missing number (add and subtract within 100)Get 3 of 4 questions to level up!
Level up on the above skills and collect up to 400 Mastery points
Learn
Practice
- Addition word problems within 100Get 3 of 4 questions to level up!
- Subtraction word problems within 100Get 3 of 4 questions to level up!
Learn
Practice
- 2-step addition word problems within 100Get 3 of 4 questions to level up!
- 2-step subtraction word problems within 100Get 3 of 4 questions to level up!
Level up on the above skills and collect up to 320 Mastery points
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Level up on all the skills in this unit and collect up to 900 Mastery points!