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Operations with Rational Numbers Skills Check
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by Samantha Arrant
| 18 Questions
1
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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