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7.ee.1 unit 2 quiz 1 review

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Evaluating Expressions, 7.EE.1

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7.ee.1 unit 2 quiz 1 review

1. 1. Quiz Review for 7.EE.1 Evaluating Expressions • Order of Operations • Distributive Property to Expand and Factor Expressions
2. 2. Who evaluated this expression correctly? Tim Sarah 3 X 7 + 21 – 32 3 X 7 + 21 – 32 3 X 28 – 32 3 X 7 + 21 – 9 3 X 28 - 9 21 + 21 – 9 3 X 19 42 - 9 = 57 = 33 1. Who used order of operations correctly? _________________________________________________________ 2. What error did the other person make? _________________________________________________________ _________________________________________________________
3. 3. 3 X 7 + 21 – 32 Parenthesis None Exponents 3 x 7 + 21 - 9 Multiplication 21 + 21 - 9 Division None Addition 42 - 9 Subtraction 33
4. 4. Who evaluated this expression correctly? Tim Sarah 3 X 7 + 21 – 32 3 X 7 + 21 – 32 3 X 28 – 32 3 X 7 + 21 – 9 3 X 28 - 9 21 + 21 – 9 3 X 19 42 - 9 = 57 = 33 1. Who used order of operations correctly? Sarah 2. What error did the other person make? Tim did not follow the correct order of operations. He added first. He did the exponents. Then subtraction and then multiplication.
5. 5. - 4 (6k + 2) + 5
6. 6. - 4 (6k + 2) + 5 -4(6K) + -4(2) + 5
7. 7. - 4 (6k + 2) + 5 -4(6K) + -4(2) + 5 = -24k + -8 + 5
8. 8. - 4 (6k + 2) + 5 -4(6K) + -4(2) + 5 = -24k + -8 + 5 = -24k + -3
9. 9. -12x + 12
10. 10. -12x + 12 Factors of -12 and 12 are 1, 2, 3, 4, 6, 12 12 will to into both numbers. -12 ( x – 1)