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Unit 2: Get ready for addition, subtraction, and estimation
900 possible mastery points
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About this unit
Let's build a solid foundation of numbers so we will be ready for addition, subtraction and estimation in fourth grade. We will round numbers, discover strategies for addition and subtraction, and practice those skills so we can accelerate our skills in fourth grade.Learn
Practice
- Round to nearest 10 or 100 on the number lineGet 5 of 7 questions to level up!
- Round to nearest 10 or 100Get 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!
- Select strategies for adding within 1000Get 3 of 4 questions to level up!
Learn
Practice
- Break apart 3-digit subtraction problemsGet 3 of 4 questions to level up!
- Select strategies for subtracting within 1000Get 3 of 4 questions to level up!
Learn
Practice
- Add within 1000Get 3 of 4 questions to level up!
- Subtract within 1000Get 3 of 4 questions to level up!
Up next for you:
Level up on all the skills in this unit and collect up to 900 Mastery points!