Curriculum>Grade 2> Module 4>Topic A: Sums and Differences Within 100

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Students use base-10 blocks to solve 2-digit subtraction equations where the subtrahend is a tens number

A. Use base-10 blocks to add a 2-digit number to a tens number

B. Add a 2-digit number to a tens number, without a model

C. Use base-10 blocks to add 2-digit numbers

D. Use understanding of place value to solve addition equations

E. Solve addition equations with 2-digit numbers

F. Solve more addition equations with 2-digit numbers

G. Use base-10 blocks to solve addition equations requiring exchanges

H. Use place value cards to solve addition equations requiring exchanges

I. Solve 2-digit addition problems without a model

K. Solve 2-digit subtraction equations

L. Decompose 2-digit numbers

M. Decompose numbers as a strategy to solve 2-digit subtraction equations

N. Solve more 2-digit subtraction equations by decomposing numbers

O. Use making tens as a strategy to solve 2-digit subtraction equations

P. Use number bonds to solve 2-digit subtraction equations

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