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In this lesson, we will learn how to add two-digit numbers by regrouping ten ones as a one ten when the sum of ones is more than ten.
Q1:
3 2 + 5 1 = .
Q2:
Look at how Benjamin added 32 to 27 by adding 3 tens and then 2 ones.
Use number lines to find the answers to these sums.
Q3:
Elizabeth is adding using a number line.
Pick the sum she is working on.
Find the answer.
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