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In this lesson, we will learn how to model jumps of ten on a number line to subtract tens numbers from two-digit numbers.
Q1:
Subtract 30 from 78. Use the number line to help you.
Q2:
Find the missing number.
Q3:
You can use a number line to subtract.
Take away ones by counting back in ones.
Take away tens by counting back in tens.
Use number lines to find these differences.
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