Operations with Rational Numbers Skills Check

by Samantha Arrant

| 18 Questions1

1 pt

- 3/8

- 1/8

1/8

3/8

2

1 pt

-15.2 + (-7.4) =

3

1 pt

4

1 pt

5

1 pt

Supergirl had some kryptonite with a radiation rating of -4.5 rads. She uses her super strength to combine it with some lead, which has radiation rating 7.1 rads. What is the final radiation rating of this combination?

6

1 pt

Poison Ivy had $17.34 in her account. She wrote a check for $24.86. What will her account balance be when the check is cashed?

7

1 pt

8

1 pt

9

1 pt

Batman had 93.5% in math class. He did not do well on his last test and his grade changed by -2.8%. What is his new grade?

10

1 pt

11

1 pt

12

1 pt

.6(5.7)=

13

1 pt

Supergirl had a gift card for a local movie theater. Each time she went to the movies, the balance remaining on the card decresased by $8.50. What number represents the total change in value on her card after she went to the movies 4 times?

14

1 pt

POison Ivy drank 3 glasses of ice tea. She drank a total of 30.3 ounces. How much did each glass hold?

15

1 pt

16

1 pt

17

1 pt

-0.54 / (-0.6)=

18

1 pt

Batman had to withdraw a total of $38.22 from three bank accoutns. What number represents the change in value of each bank account?

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