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**Decimal place-value chart**

Decimal Point Hundredths Ten Thousandths Thousands Hundreds Tens Ones Tenths Thousandths Hundred Thousandths 1,000 100 10 1 and 1 10 1 . 100 1 . 1,000 10,000 100,000

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**Rounding Decimals .33 .3272727 .337272 Step 1. Identify the place**

value of the digit you want to round Step 3. Drop all digits to the right of the identified digit Step 2. Identify the digit to the right. If 5 or more, increase the identified digit by 1. If less than 5 do not change .33

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**Converting Proper Fractions to Decimals**

.75 2.8 20 EQUALS 3 4 .75

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**Converting Pure Decimals to Decimal Fractions**

Step 1 24 Step 2 24 1 .24 Places 2 Step 3 24 100

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**Adding and Subtracting Decimals**

7.0000 5.3000 .0003 5.0200

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**Multiplying Decimals 9.09 x 3.8 3 decimal places 34542 34.542**

17275 .17275 6.91 x

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**Dividing Decimals 3 Steps**

Make the divisor a whole number by moving the decimal point to the right Move the decimal point in the dividend to the right the same number of places as in step 1. If there are not enough places, add zeros to the right of the dividend. Place the decimal point in the quotient above the new decimal point in the dividend. Divide as usual. Question Answer 18.42 45 378 360 189 180 90

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**Shortcuts for Multiples of 10**

Multiplication Count the zeros in the multiplier Move the decimal point the same number of spaces to the right 6890 68.9 6.89 x 1000 6.89 x 10 6.89 x 100 689

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**Shortcuts for Multiples of 10**

Division Count the zeros in the divisor Move the decimal point the same number of spaces to the right .00689 .689 6.89 / 1000 6.89 / 10 6.89 / 100 .0689

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