Curriculum>Grade 2> Module 1>Topic B: Initiating Fluency with Addition and Subtraction Within 100

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Students subtract a single-digit number from a 2-digit number, crossing a ten. They use number bonds and base-10 block models to practice the strategy of making 10, then subtracting the remainder to solve

A. Identify the connection between a number bond and a fact family

B. Complete number bonds

C. Use a number bond to make 10

D. Use number bonds to solve related addition and subtraction equations

E. Use number bonds to solve addition equations that cross a ten

F. Solve addition equations that cross a ten, where one addend is 9

G. Solve more addition equations that cross a ten, where one addend is 8

H. Solve more addition equations that cross a ten, where one addend is 7

I. Find the missing subtrahend in subtraction equations

J. Use number bonds to make 10 and solve subtraction equations

K. Solve subtraction equations that cross a ten (Level 1)

L. Solve subtraction equations that cross a ten (Level 2)

M. Build fluency solving subtraction equations that cross a ten

N. Subtract single-digit numbers from a tens number, using base-10 blocks for support

P. Use number bonds to subtract a 1-digit number from a 2-digit number, crossing a ten

Q. Build fluency solving subtraction equations that cross a tens number

R. Build fluency solving subtraction equations with a 1- and 2-digit number

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