Students use base-10 blocks to model 2-digit numbers, then use place value charts to add the numbers. Students will learn when to trade into the tens in order to solve
A. Review adding ones to 2-digit numbers
B. Review adding tens to 2-digit numbers
C. Identify tens from a group of numbers and label place value of 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
I. Review adding 1- and 2-digit numbers