Flashcards in Quiz 31, 15.1 - 15.3 Deck (13)

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1

-3(-6) =

negatives cancel, so 3 x 6 =

18

2

-8 - (-10) =

same as -8 + 10 =

10 - 8 =

2

3

-7(8) =

one negative so the answer is negative

-56

4

3(2^{2}) =

3 x 4 =

12

5

4 + 2^{3} =

4 + 8 =

12

6

5^{2} - 3^{2} =

25 - 9 =

16

7

4 + 3^{2}(7 - 5) =

4 + 9(2) =

4 + 18 =

22

8

pir^{2} if r = 2

3.14 x 2^{2}

3.14 x 4

12.56

9

lwh if l = 9; w = 7; h = 4

9 x 7 x 4

252

10

y^{2} + 2x if y = 4 and x = 3

4^{2} + 2(3)

16 + 6

22

11

Use the distributive principle to simplify:

2(3 + x)

6 + 2x

12

Use the distributive principle to simplify:

5(a - b)

5a - 5b

13

Use the distributive principle to simplify:

4(m + 7)

4m + 28