Solve problems by adding and subtracting to or from 3-digit numbers
Lesson 12 / 15
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Lesson outcome
I can solve problems by adding to and subtracting from 3-digit numbers.
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Number lines can record the steps in our thinking when we are partitioning to add and subtract.
The 1s digit does not change when you add or subtract a multiple of ten.
Number facts to 10 help when crossing the 10s and 100s boundaries.
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