CHISD
Number Operations
Unit Test: B
1. Marco paid $36.89 for 8.6 gallons of gas. What is the price of 1 gallon of gas?
A $3.29 C $4.09
B $3.89 D $4.29
2. The area of a rug is [pic] square feet. The rug is [pic]feet long. What is the length of the rug?
A [pic] C [pic]
B [pic] D [pic]
3. A caterer prepared a turkey that weighed [pic] pounds. Each serving of turkey will be [pic] pound. How many whole servings will the turkey provide?
A 70 C 82
B 79 D 159
4. Which expression has the same value as
−5 − (−9)?
A (−4)(−1)(0)
B 24 ( (−6)
C (−2) − (−8)
D 8 + (−4)
5. Erin has 1[pic] pounds of trail mix. She wants to make [pic]-pound bags of the mix for snacks. How many full bags can she make?
A 20 C 22
B 21 D 23
6. A bar of soap weighs 3.8 ounces. The ingredient glycerin makes up 0.4 of the weight of the soap. What is the weight of the glycerin in the bar of soap?
A 1.52 oz C 4.2 oz
B 3.8 oz D 15.2 oz
7. What is the reciprocal of [pic]
A [pic] C [pic]
B [pic] D −7
8. Tyler wrote checks on his checking account for $20, $20, $18, $20, and $35. He also deposited $53 in the account. Which number describes the change in the balance of his account?
A −$113 C $60
B −$60 D $83
9. A swimming pool is 21.4 feet long and 12.75 feet wide. What area does the pool occupy?
A 8.65 ft2 C 272.85 ft2
B 34.15 ft2 D 2,728.50 ft2
10. How does the product of a fraction and a whole number compare to the whole number?
A The product is less than the whole number.
B The product is less than or equal to the whole number.
C The product equals the whole number.
D The product is greater than the whole number.
11. Which expression has an answer that is positive?
A (−7)(13) C (−14) ( (−7)
B (14)(−2) D (−42) ( 6
Number Operations
Unit Test: B
12. In 12 hours, the temperature fell steadily from 17(F to −7(F. What was the average change in temperature per hour?
13. Tomas bought a bottle of shampoo that held 10.5 fluid ounces. He uses [pic] of the shampoo every time he washes his hair. How many ounces of the shampoo are left after he washes his hair 6 times?
14. Chou is modeling the difference 10 − (−6) with counters. What is the first step he should do?
15. Write an integer expression with two operations that has the same value as 3(−7) − (−6).
16. Sanjay’s dog weighs 46 pounds on Earth. Multiply the dog’s Earth weight by 0.38 to find how much it would weigh on Mars, and by 2.36 to find how much it would weigh on Jupiter. How much less would the dog weigh on Mars than on Jupiter?
17. A straw for a box drink is [pic] inches long and costs $0.015 to make. The straws are laid end-to-end on the conveyor belt until they extend [pic] inches. How many straws are in the line and how much do they cost?
18. A bag of potatoes weighs [pic] pounds.
Of the potatoes in the bag, [pic] are rotten. What is the weight of the good potatoes?
19. A football team received 2 penalties for 15 yards each, 7 penalties for 5 yards each, and 1 penalty for 19 yards. Write and find the value of an expression to find the change in the field position from these penalties.
20. Describe the process of subtracting a negative integer from a positive integer.
21. Chuck earned $76 mowing lawns. The gas for the mower cost $12 and he bought a new string for the trimmer for $7. Write and find the value of an integer expression to find the amount of his profit.
22. a. Tara paid $145 for a course on
becoming a notary public. She paid
$21 to the state of Texas for a
license, and $30 for an official seal
and record book. Write and find the
value of an integer expression to find
the change in the amount of money
she has.
b. By law, Tara can only charge $6 for every signature she notarizes. At that rate, how many signatures does she have to notarize to break even with her expenses?
Unit 2 Test: B
1. D
2. A
3. C
4. D
5. C
6. A
7. C
8. B
9. C
10. A
11. C
12. −2°
13. [pic] fl oz, or 6.5625 fl oz
14. Add 6 zero pairs of counters so there are negative counters to subtract.
15. Sample answer: (−42) ( 7 − 9
16. 91.08 lb
17. 30; $0.45
18. [pic] lb
19. 2(−15) + 7(−5) + (−19); −84 yd, or 84 yd loss
20. Add the opposite of the integer.
21. 76 + (−12) + (−7) ’ 57; $57
22. a. (−145) + (−21) + (−30) ’ −196; −$196
b. 33 signatures
Unit 2 Test: C
1. C
2. A
3. A
4. D
5. A
6. C
7. C
8. D
9. [pic]
10. To divide by [pic][pic], use [pic].
11. −8°F
12. a. −$83.59
b. 20 pies
13. 3(−15) + (−5) + ([pic]) ’ −67; −67 yd, or a 67-yd loss
14. a. [pic] lb
b. $10.28
15. a. 51 lengthwise bricks; 106 edgewise bricks
b. $32.13; $66.78
16. Sample answer: When you multiply two fractions, you are taking a part of a part. The product (a part of a part) will be less than the parts.
Unit 2 Test: D
1. C
2. A
3. C
4. A
5. A
6. B
7. A
8. B
9. B
10. $4.03
11. You would add zero pairs if you were subtracting a negative number from a positive number or subtracting a positive number from a negative number.
12. 52 + (−7) + (−24) ’ 21; She made $21.
13. 134°F
14. [pic] lb
15. Add the opposite of −3, which is 3;
8 + 3 ’ 11
16. $389.62
17. 0.965 min
18. −15 + (−10) ’ −25 yd
19. $10.93
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