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    Addition and Substraction of Fractions

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    1. Find the LCM of 16 and 40.
    ____a. 40
    __x_b. 80
    ____c. 120
    ____d. 640

    2. Add and Simplify: 4/5+3/4
    ____a. 7/20
    ____b. 7/9
    _x__c. 31/20
    ____d. 17/9

    3. Subtract and simplify: 8/15-2/9
    _x__a. 2/45
    ____b. 16/135
    ____c. 40/135
    ____d. 14/45

    4. Which of the following statements is true?
    ____a. 3/5>1/2
    ____b. 1/2<4/9
    ____c. 5/11>1/2
    __x_d. 1/2>5/8

    5. Solve: x + 3/8=5/12
    ____a. 10/9
    ____b. 19/24
    ____c. 5/32
    _x__d. 1/24

    6. Convert 9 2/3 to fraction notation.
    ____a. 4/3
    ____b. 14/3
    ____c. 21/3
    _x__d. 29/3

    7. Divde: 7/2138
    ____a. 302 6/7
    __x_b. 305 3/7
    ____c. 315 6/7
    ____d. 350 3/7

    8. Add: 8 3/4 + 1 1/6
    ____a. 9 1/12
    ____b. 9 1/3
    ____c. 9 2/5
    _x__d. 9 11/12

    9. Subtract: 8 1/2 - 4 2/5
    ____a. 4 9/10
    _x__b. 4 1/10
    ____c. 3 9/10
    ____d. 3 1/5

    10. Dustin worked 6 4/5 hours on Monday and 7 3/4 hours on Tuesday. How many hours did he work on those two days?
    ____a. 13 9/20 hours
    _x__b. 13 7/9 hours
    ____c. 14 2/9 hours
    ____d. 14 11/20 hours

    11. Subtract: 98 - 16 2/3
    ____a. 82 2/3
    ____b. 81 2/3
    _x__c. 81 1/3
    ____d. 80 2/3

    12. Greg needs 234 ft. of baseboard to finish trimming the floors in his house. He has 145 3/4 ft. of baseboard. How much baseboard does he need to buy?
    __x_a. 88 1/4 ft.
    ____b. 89 3/4 ft.
    ____c. 90 1/4 ft.
    ____d. 90 3/4 ft.

    13. Multiply: 18 x 5/6
    ____a. 21 3/10
    ____b. 18
    __x_c. 15
    ____d. 1 2/3

    14. Multiply: 4 3/8 x 2 1/5
    _x__a. 9 5/8
    ____b. 9 7/40
    ____c. 8 3/40
    ____d. 6 23/40

    15. Divide: 1 2/5 divid 21
    ____a. 1/15
    ____b. 1 2/105
    _x__c. 15
    ____d. 29 2/5

    16. A pizza dough recipe calls for 2 1/2 cups of flour. How much flour is needed for 4 recipes?
    ____a. 8 cups
    ____b. 9 cups
    _x__c. 10 cups
    ____d. 11 cups

    17. An order of books weighs 36 lb. Each book weighs 1 1/3 lb. How many books are in the order?
    ____a. 12 books
    ____b. 27 books
    ____c. 30 books
    __x_d. 48 books

    18. Simplify: 5/8 + 2 1/3 x 3 1/4
    ____a. 8 5/24
    ____b. 7 5/24
    __x_c. 3 7/8
    ____d. 5/16

    19. Find the average of 1/4, 3/8, and 5/6 ( this one is kinda difficult, show formula)
    ____a. 4 3/8
    ____b. 1 41/64
    _x__c. 1 11/24
    ____d. 35/72

    20. Estimate 16 20/21 x 28 3/7 - 4 13/25 + 8 2/47 as a whole number or as a mixed number where the fractional part is 1/2. (this one is kinda difficult, show formula)
    ____a. 452
    ____b. 480
    ____c. 488
    __x_d. 492 1/2

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