Quiz 31, 15.1 - 15.3 Flashcards Preview

7th math > Quiz 31, 15.1 - 15.3 > Flashcards

Flashcards in Quiz 31, 15.1 - 15.3 Deck (13):
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(22) =


3 x 4 =

12

5


4 + 23 =


4 + 8 =

12

6


52 - 32 =


25 - 9 =

16

7


4 + 32(7 - 5) =


4 + 9(2) =

4 + 18 =

22

8


pir2 if r = 2


3.14 x 22

3.14 x 4

12.56

9


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


9 x 7 x 4

252

10


y2 + 2x if y = 4 and x = 3


42 + 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