'5 decimal places' diaporamas de présentation

Approximation

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NOTES

NOTES. Multiplying Decimals. Name: ___________ Date: __________ Math ___ hr MC2 pg 65 section 2.3. MULTIPLYING DECIMALS:. 1 st MULTIPLY AS NORMAL. 2 nd Count the number of digits behind the decimal in the factors (in the problem).

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Decimal place-value chart

Decimal place-value chart. Ten Thousandths. Hundredths. Decimal Point. Hundred Thousandths. Thousandths. Thousands. Hundreds. Tens. Ones. Tenths. 1,000. 100. 10. 1. and. 1 10. 1 . 100. 1 . 1,000. 1 . 10,000. 1 . 100,000. .3 2 72727. .3 3 7272.

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0.3

L E S S O N. 2 4. Multiplying Decimals. 0.7. You can use graph paper to model decimal multiplication. Here is a model of the product of 0.7 and 0.3. 0.3. 1. Because 21 of the 100 squares are shaded, 0.7 ? 0.3. = 0.21. 1. L E S S O N. 2 4. BOOK. NOTE. Multiplying Decimals.

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0.3

L E S S O N. 2 3. Multiplying Decimals. 0.7. You can use graph paper to model decimal multiplication. Here is a model of the product of 0.7 and 0.3. 0.3. 1. Because 21 of the 100 squares are shaded, 0.7 ? 0.3. = 0.21. 1. L E S S O N. 2 3. BOOK. NOTE. Multiplying Decimals.

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EXAMPLE 1

+ 2 decimal places. 0.41. EXAMPLE 1. Multiplying Decimals. 5.82. 2 decimal places. 582. 2328. 2.3862. 4 decimal places. 18. + 0 decimal places. 645. ANSWER. 6.45 18 = 116.1. Check: Because 6 20 = 120 , the product is reasonable. EXAMPLE 2. Multiplying Decimals. a. 6.45.

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