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Rounding Decimals Warm-Up

Rounding Decimals Warm-Up. Round 18.3458 to nearest thousandths. Round 128.912 to nearest tenths. Round 45.679 to nearest hundredths. Round 8.12 to nearest tenths. Round 63.1111 to nearest hundredth. Round 182.987 to nearest whole #. Round 467.9824 to nearest thousandths.

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Rounding Decimals Warm-Up

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  1. Rounding Decimals Warm-Up • Round 18.3458 to nearest thousandths. • Round 128.912 to nearest tenths. • Round 45.679 to nearest hundredths. • Round 8.12 to nearest tenths. • Round 63.1111 to nearest hundredth. • Round 182.987 to nearest whole #. • Round 467.9824 to nearest thousandths. • Round 999.999 to nearest whole #. • Round 56.9723 to nearest tenths. • Round 4123.897 to nearest hundreds.

  2. Adding & SubtractingMultiplying Dividing by Whole NumberDividing by Decimal DECIMALS M6N1g

  3. +- ExamplesX Examples Dividing by Whole Number ExamplesDividing by Decimal Examples DECIMALS (BACK)

  4. Adding and Subtracting • LINE UP THE DECIMALS!!!!! • If you have a WHOLE number place the decimal on the right end. • Fill in zeros in any “blanks”. • Add or subtract as you normally would. • Bring down decimal. • 1.83 +.046 = • 27 - .834 = • 4.67 – 2.132= • 9.18 – 5 = Examples

  5. Multiplying • DO NOT LINE UP THE DECIMAL! • Multiply as if there are no decimals. • Count the TOTAL numbers to the right of the decimals in both numbers you are multiplying. • In the product, place the decimal so that you have the total number of numbers to the right of the decimal as in the two factors combined. • 8.12 X 3.4 = • 4.6 X 5 = • 9.342 X 1.3 = Examples

  6. Dividing • Identify what type of division you have: • Dividing decimals by whole numbers OR • Dividing by decimals

  7. Dividing • Dividing Decimals by Whole Numbers: • Bring up the decimal and keep it in “line”. (There is only a decimal in the divident-inside of the bracket.)

  8. Examples • 5 16.25 • 4 75.88

  9. Dividing • Dividing by Decimals: • Over, Over, Up. • The outside # must become a whole number by moving the decimal to the right end. Then move the decimal on the inside the same number of times to the right as you did on the outside and bring it up.

  10. Examples • .6 114 • .5 16.25 • .04 580.4

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