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Unit 6: Addition and subtraction within 1000
1,100 possible mastery points
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About this unit
Adding and subtracting 2- and 3-digit numbers might sound hard, but don't worry--in second grade, you'll learn all the strategies! With tools like place value blocks, number lines, and breaking apart numbers, you'll be solving equations like a math whiz in no time.Practice
- Skip-counting by 100sGet 5 of 7 questions to level up!
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Practice
- Add 10s and 100s (no regrouping)Get 3 of 4 questions to level up!
- Add within 1,000 using place value blocksGet 3 of 4 questions to level up!
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Practice
- Subtract 10s and 100s (no regrouping)Get 5 of 7 questions to level up!
- Subtract within 1,000 using place value blocksGet 3 of 4 questions to level up!
Learn
Practice
- Break apart 3-digit addition problemsGet 3 of 4 questions to level up!
- Add using groups of 10 and 100Get 3 of 4 questions to level up!
- Add on a number lineGet 3 of 4 questions to level up!
- Select strategies for adding within 1000Get 3 of 4 questions to level up!
Learn
Practice
- Adding up to four 2-digit numbersGet 3 of 4 questions to level up!
- Adding up to four 2-digit numbers word problemsGet 3 of 4 questions to level up!
Up next for you:
Level up on all the skills in this unit and collect up to 1100 Mastery points!