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About the Mathematics in This Unit

Benchmarks/Goals	Examples
Subtract multiples of 10 from multiples of 10 up to 90.	Build 50. Remove 20. How many now?
Use greater than and less than symbols to compare two 2-digit numbers.	d
Add/subtract 10 to/from any 2-digit number.	37 + 10 = 47 42 − 10 = 32
Use models to add numbers with totals under 100.	d

As we engage in the mathematics of this unit, students will continue to share their reasoning and solutions. As they work on problems at home, continue to ask questions that encourage your child to extend his or her thinking and explain his or her reasoning.

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