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Solving Expressions You will have 20 seconds to complete each of the following 10 questions. A chime will sound when the next problem appears. Good luck!

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Question #1 8 + 2 3

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Question #2 15 – 9 2 3

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Question #3 5 + 6 3 – 7

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Question #4 3 (4 + 2)

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Question #5 6 7 – 5 + 4 3

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Question #6 18 – 4 2 5

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Question #7 8 (5 – 3) + 2

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Question #8 5 – 3 8 6

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Question #9 5 (3 – 2) + 6 3

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Question #10 5 + 2 ³ 3

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Good job! How did you do? Did you remember to use the order of operations when solving the problems? Lets check. Click to view rules.

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What is the correct order of operations? 1 st – Parenthesis 2 nd – Exponents 3 rd – Multiply & Divide from left to right 4 th – Add & Subtract from left to right Click to continue

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Remember the Phrase Please Excuse My Dear Aunt Sally a x u i d u r p l v d b e o t i t n n i d r t e p e a h n l c e t y t s i s Click to continue

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Or the word P E M D A S a x u i d u r p l v d b e o t i t n n i d r t e p e a h n l c e t y t s i s Click to continue

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Solutions The following slides show the correct steps to solving the previous 10 problems. Click to view each step.

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#1 Solution 8 + 2 3 8 + 6 14

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#2 Solution 15 – 9 2 3 15 – 18 3 15 – 6 9

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#3 Solution 5 + 6 3 – 7 5 + 18 – 7 23 – 7 16

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#4 Solution 3 (4 + 2) 3 6 18

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#5 Solution 6 7 – 5 + 4 3 42 – 5 + 4 3 42 – 5 + 12 37 + 12 49

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#6 Solution 18 – 4 2 5 18 – 2 5 18 – 10 8

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#7 Solution 8 (5 – 3) + 2 8 2 + 2 4 + 2 6

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#8 Solution 5 – 3 8 6 5 – 24 6 5 – 4 1

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#9 Solution 5 (3 – 2) + 6 3 5 1 + 6 3 5 + 6 3 5 + 2 7

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#10 Solution 5 + 2 ³ 3 5 + 8 3 5 + 24 29

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Great job! Always remember to use the rules. We should all get the same answers. Keep the clues in mind while working.

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