Ms. Price

Number System

We completed 10 problems and reviewed the answers by having the most common answer as each team's final answer to see which team would get the most correct. In class, we reviewed #1 incorrectly and the correct answer is updated here. *1) 3 – 3(x -2) 3-3x + 6 --->>> -3x + 9 2) –(1 – 5n) – 7n -1 + 5n - 7n --->>> -1 - 2n 3) 8 + 7(7n – 4) 8 + 49n - 28 --->>> 49n - 20 4) 4x + 5(3x -3) 4x + 15x - 15 --->>> 19x - 15 5) 1 – 8x – 5x 1 + -8x + -5x --->>> 1 - 13x 6) 5 – 2(8x + 4) 5 + -2(8x+4) ---> 5 + - 16x + - 8 --->>> -3 - 16x 7) 7 + 6x + 9(x + 1) 7 + 6x + 9x + 9 --->>> 15x + 16 8) -3 + 8x + 2 8x - 1 9) 5 – 8n – 4n -12n + 5 10) 9 + 3x + 1 – 2x x + 10 The homework below also uses this skill and most students completed the homework in class during the stations activity. The stations activity dealt with evaluating expressions (substitution).
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