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PRE-ALGEBRALesson 5 of 171

ADDITION AND SUBTRACTION

Subtraction

Students learn to subtract numbers with two or more digits, such as 985 - 47. The first step is to line up the numbers vertically so that the units digits are in the same column. Next, subtract the units digits, the tens digits, and the hundreds digits. When subtracting the units digits, more...

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*Also referred to as Elementary Algebra or Beginning Algebra.

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