Solving equations with decimals
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Solving Equations with Decimals PowerPoint PPT Presentation


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Solving Equations with Decimals. 3.5. Estimating Answer to Check. Rounding decimals 5 and above round up 4 and below keep the same Tenths- 1 decimal place Hundredths-2 decimal places Thousandths- 3 decimals places. Round to the nearest hundredths.

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Solving Equations with Decimals

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Solving Equations with Decimals

3.5


Estimating Answer to Check

Rounding decimals

  • 5 and above round up

  • 4 and below keep the same

  • Tenths- 1 decimal place

  • Hundredths-2 decimal places

  • Thousandths- 3 decimals places


Round to the nearest hundredths

  • Look at the third decimal place to determine


Examples:

  • 23.874

  • 450.0982


Add or Subtracting Decimals

  • Line up the decimal place vertically

  • When subtracting put larger number on top


Ex: Add or Subtract and round to nearest hundreths

1.) 0.345 – (-34.1)

2.) 0.86 + (-8.2)


Solving 1 Step Equations with APE of decimals

  • KFC

  • Add the additive inverse of the number being added to the variable to both sides of the equation

  • Remember to line up decimals and put bigger number on top


Ex: 3.8 =n-3.62

Estimate

Solve


Ex: -22 =p+13.7

Estimate

Solve


Ex: x+(-0.0025)= 0.0024

Estimate

Solve


Ex: 117.345+m=200

Estimate

Solve


Homework

Worksheet


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