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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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Presentation Transcript
estimating answer to check
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
Round to the nearest hundredths
  • Look at the third decimal place to determine
examples
Examples:
  • 23.874
  • 450.0982
add or subtracting decimals
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
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
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
Ex: 3.8 =n-3.62

Estimate

Solve

ex 22 p 13 7
Ex: -22 =p+13.7

Estimate

Solve

ex 117 345 m 200
Ex: 117.345+m=200

Estimate

Solve

homework
Homework

Worksheet

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