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Grade 2 (ages 7 to 8) · Math

Adding and subtracting within 100

Two-digit addition and subtraction with no regrouping, using tens and ones, the number line, and part-whole bars

About three to four lessons of 40 to 55 minutes

Chalk illustration of a part-whole bar above a number line, with two honey-gold jump arcs of different sizes landing at the same point.
Adding and subtracting by tens and ones: A visual bridge from part-whole bars to number-line jumps for two-digit addition and subtraction.
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