Curriculum>Grade 1> Module 4>Topic E: Addition of Tens and Ones to a Two-Digit Number

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Students review the definition of a tens number. Given several numbers, students identify the tens. Students are introduced to place value charts by labeling the places in a 2-digit number

A. Review adding ones to 2-digit numbers

B. Review adding tens to 2-digit numbers

D. Break down 2-digit numbers into tens and ones

E. Use place value charts with base-10 blocks to add two 2-digit numbers

F. Solve 2-digit addition equations by adding tens and ones separately

G. Mentally solve 2-digit addition problems

H. Use place value charts with base-10 blocks to add 2-digit numbers, including regrouping

I. Review adding 1- and 2-digit numbers

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