Second graders practice developing strategies for mental calculation when counting in 10s and 100s. They mentally perform calculations involving addition and subtraction to be able to state the difference between numbers by counting in 10s and 100s.
Solving Two-Step Word Problems Involving Addition and Subtraction of Whole Number Including Money
Numbers and Operations: Addition and Subtraction Grade 2
Multiplication Facts, Facts, Facts and Some Reese's Pieces for Snack!
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- Nanette S., Teacher
- Northfield, VT