Order of Operations with Decimals

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What is the Order of Operations?

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The Order of Operations is a set of rules that determines the sequence in which calculations are performed in a mathematical expression. The order is Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right). Often remembered by the acronym PEMDAS.

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CCSS.7.NS.A.3

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What does it mean to evaluate an expression?

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To evaluate an expression means to calculate its value by performing the operations in the correct order.

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CCSS.6.EE.A.2C

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What is a decimal?

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A decimal is a fraction whose denominator is a power of ten, represented with a decimal point. For example, 0.5 is a decimal that represents 5/10.

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How do you add decimals?

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To add decimals, align the numbers by the decimal point and add as you would whole numbers, placing the decimal point in the sum directly below the other decimal points.

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CCSS.5.NBT.B.7

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How do you multiply decimals?

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To multiply decimals, multiply the numbers as if they were whole numbers, then count the total number of decimal places in both factors and place the decimal point in the product accordingly.

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CCSS.6.NS.B.3

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CCSS.7.NS.A.3

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CCSS.7.NS.A.3

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CCSS.7.NS.A.3

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CCSS.7.NS.A.3

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CCSS.7.NS.A.3