In this lesson, we will learn how to subtract a 1-digit number from a 2-digit number by breaking apart ones and model this with equations.
Q1:
Help James take away 7 from 24 by breaking apart ones.
First, take away the 4 ones:
20−4=.
We need to take away 7, how many more should we take away?
Take away the remaining ones:
20−3=.
Q2:
If you know that 8=6+2, find 26−8.
Q3:
Use the given model to solve 33−7.
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