In this lesson, we will learn how to subtract a one-digit number from a two-digit number when crossing a ten by modeling two jumps on a number line.
Q1:
Use the number line to calculate 32−7.
Q2:
There are 15 students in a class. 6 of them are girls. Use the number line to find how many boys are in that class.
Q3:
What are the two numbers that should fill the empty boxes on this number line?
What is the calculation shown by this number line?
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