Topic: Order of Operations Summary: Mathematical expressions and statements have a grammar called the order of operations. Those who read, write or use mathematics understand and use this order and other properties of numbers. Explanation and practice are provided here. Related Lessons: "It's the Law" which focuses on properties of numbers. Prior Experience: Computation with whole numbers and decimals and some fractions. Support Pages: Order of Operations is the Grammar of Mathematics. (not required) and "Most Operations Are Not Distributive." (not required).

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 WARM UPS: Please do the following and record the result. 1. Simplify: 3 + 4 x 5 2. Add 3 and 4 then multiplying the result by 5. 3. Multiply 4 and 5 and add 3 to the result. 4. Write an expression which indicates that 4 and 8 are added and the result is multiplied by 2. 5. Write an expression which indicates that 4 is multiplied by 2 then 8 is added to the result. 6. Choose: Author's preference:     Alternate option: