Evaluate each expression, remembering the order of operations. Show your work. 1. 15 + 6 ∙ 3
2. (4 + 5) ∙ 2

3.
8 6
2
−

4.
13+15
20 6 −

Evaluate each expression using these replacement values.
a = 6
b = 7
c = 5
d = −2

9.
5. 4 ∙ 2 + a
6. ab + 42
7. (a + c) + b
8. 4b + c
b c +

10.
3
a d +
b c

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