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In this lesson, we will learn how to add two-digit numbers by adding the ones, adding the tens, and then adding the results and record this with horizontal addition.
Q1:
We can break apart numbers into tens and ones to add.
Add the tens.
What is 4 0 + 1 0 ?
Add the ones.
What is 3 + 6 ?
Add the sums to find 4 3 + 1 6 .
Q2:
Break apart the numbers into tens and ones to add.
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