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Decimal Review

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Adding decimals 8.12 + 14 + 32.9 Rules 8.12 14 + 32.9 8.12 14 +32.9 1. Line up the decimal points Whole numbers have a decimal point at the far right. 2. Place a decimal point to the far right of whole numbers and add zeros as needed.00 3. Fill in any empty spaces with zeros 0 4. Add 55.02 EX1)

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Subtracting decimals 84 – 16.47 Rules 84 - 16.47 84 - 16.47 1.Line up the decimal points Whole numbers have a decimal to the far right 2. Place a decimal point at the right and add zeros as needed for whole numbers.00 3. Fill in any empty spaces with zeros 4. Subtract 67.53 EX 2)

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Multiplying decimals 27 X 8.29 Rules 27.00 X 8.29 27 1. DO NOT line up the decimal points 2. Place the longest looking digit on the top Makes multiplication easier 5 8 0 3 3. Multiply 4. Count your decimal point in problem Line up numbers 1 6 5 8 0 2 2 3 8 3 EX 3) 8.29 X 2 5. Count the same number of decimal points in answer

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8 1 2 2 Dividing decimals 81.2 ÷ 0.4 Rules 1. Divisor dividend The dividend is always divided by the divisor 2. You must make the divisor a whole number if it is a decimal 3. If the decimal moved in the divisor, then the decimal on the dividend must move the same amount 5. Divide Dividend divisor 0 4 2 -8 1 0 2 3 -1 2 4. Bring your decimal up into your answer 02 0 0 0 2 0 5 EX 4)

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Essential Question How is the process of adding decimals different with the process of multiplying decimals?

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Decimal Review Date __________________

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Adding decimals Rules 1. _________the decimal points Whole numbers have a decimal point at the far right. 2. Place a decimal point to the far right of whole numbers and add zeros as needed 3. Fill in any empty spaces with zeros 4. Add or subtract EX1)

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Subtracting decimals EX 2)

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Multiplying decimals Rules 1. _______ line up the decimal points 2. Place the longest looking digit on the top Makes multiplication easier 3. ________ 4. ______ your decimal point in _______ Line up _______ EX 3) 5. Count the _____ number of decimal points in ______

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Dividing decimals Rules 1. The dividend is always divided by the divisor 2. You must make the divisor a _____ number if it is a decimal 3. If the decimal moved in the divisor, then the decimal on the dividend must move the _____ amount 5. 4. Bring your decimal __ into your answer EX 4)

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Essential Question How is the process of adding decimals different with the process of multiplying decimals?

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