3.6.1 Adding and Subtracting Decimals: Line Up the Point
3.6 The Four Operations with Decimals: Line Up the Decimal Point
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3.6.1 Adding and Subtracting Decimals: Line Up the Point
Core idea
Lining up the decimal point lines up the matching places, and then you add or subtract in columns just like whole numbers.
Module goal. Master the methods for adding, subtracting, multiplying, and dividing decimals, understand why the point moves where it does, and learn to round and handle repeating cases.
eastmath.com · 3.6 The Four Operations with Decimals: Line Up the Decimal Point · 3.6.1 Adding and Subtracting Decimals: Line Up the Point