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Adding and Subtracting Decimals.  Adding Decimals  Subtracting Decimals  Estimating While Adding or Subtracting Decimals  Solving problems by Adding.

Published byEmerald Hardy Modified over 9 years ago

Presentation on theme: "Adding and Subtracting Decimals.  Adding Decimals  Subtracting Decimals  Estimating While Adding or Subtracting Decimals  Solving problems by Adding."— Presentation transcript:

1 Adding and Subtracting Decimals

2  Adding Decimals  Subtracting Decimals  Estimating While Adding or Subtracting Decimals  Solving problems by Adding or Subtracting Decimals Section Objectives

3 Adding Decimals StepExample Step 1: Write the decimals so that the decimal points line up vertically. Add: 0.004 + 0.085 Step 2: Add or subtract as with whole numbers. Step 3: Place the decimal point in the sum or difference so that it lines up vertically with the decimal points in the problem.

4 Subtracting DecimalsEXAMPLE SOLUTION Subtract 3.3 from 28.

5 Estimating When Adding or Subtracting DecimalsEXAMPLE SOLUTION Subtract 2.1 from 7.6. Exact Estimate Since 5.5 is close to 6, our answer is reasonable.