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About the Mathematics in This Unit

Benchmarks	Examples
Add/subtract 10 or 100 to/from numbers within 1,000.	Start number: 189 d
Add fluently within 100.	Chen had 57 stamps in his collection. His brother gave him 34 more. How many stamps does Chen have in his collection now? 57 + 34 = _______ d
Solve comparison story problems with a bigger unknown.	Sally and Franco have some marbles. Sally has 22 marbles. Franco has 43 more marbles than Sally. How many marbles does Franco have?
Count by 5s, 10s, and 100s within 1,000.	d

In our math class, students continue to engage in math problems and activities and share how they solve a given problem. Most importantly, students accurately solve math problems in ways that make sense to them. At home, encourage your child to explain his or her math thinking to you. In the coming weeks, you will receive suggestions for activities to do at home that further support the mathematics in this unit.

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