Grade 8 Math
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20 QuestionsShow answers
  • Question 1
    60 seconds
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    Q. The additive inverse of -9/15 is:
    answer choices
    -15/9
    9/15
    0
    15/9
  • Question 2
    60 seconds
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    Q. The two rational numbers which are equal to their recipeocals are
    answer choices
    1,-1
    1,0
    -1,0
    0,2
  • Question 3
    60 seconds
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    Q. The rational number 3/2 lies between __________ and ____________ on the number line.
    answer choices
    0,1
    1,2
    3,2
    1,-1
  • Question 4
    120 seconds
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    Q. The product of multiplicative inverse and additive inverse of (-5)/7 is ______________
    answer choices
    1
    5/7
    -1
    0
  • Question 5
    120 seconds
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    Q. Find the difference between ( 1/ 6 and ( (-1)/18 ) .
    answer choices
    -1/9
    1/9
    -2/9
    2/9
  • Question 6
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    Q. Sum of 2/5 + ( (- 4)/15 ) ______________.
    answer choices
    6/15
    -2/15
    2/15
    -6/15
  • Question 7
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    Q. The absolute value of (-7)/9 is _____________.
    answer choices
    9/7
    7/9
    -9/7
    -7/9
  • Question 8
    120 seconds
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    Q. The product of two rational numbers is –7. If one of the number is –10, the other number is.
    answer choices
    -7/10
    -10/7
    7/10
    10/7
  • Question 9
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    Q. Number of rational numbers between any two rational numbers
    answer choices
    0
    count less
    1
    10
  • Question 10
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    Q. If x= 13/17 then -(-x)=
    answer choices
    -13/17
    13/17
    0
    1
  • Question 11
    60 seconds
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    Q. Rational numbers are closed under what airthemetic operations
    answer choices
    +,-,x
    +,x
    -,÷
    ÷, x
  • Question 12
    180 seconds
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    Q. Simplify [ 3/5 x 2/15 ] + [ 2/5 x 2/15 ] (use property )
    answer choices
    3/15
    1
    2/15
    1/15
  • Question 13
    120 seconds
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    Q. Value of (-3/8 ÷ 9/16 ) x 3/2 =
    answer choices
    1
    0
    -1
    2/3
  • Question 14
    60 seconds
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    Q. What property we use to compute 1/5+ 3/4 +2/15+5/8
    answer choices
    distributive
    commutative,associative
    closure
    inverse
  • Question 15
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    Q. The rational number which does not have reciprocal is
    answer choices
    1
    0
    -1
    nothing
  • Question 16
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    Q. The product of rational number and its reciprocal is
    answer choices
    0
    same number
    -1
    1
  • Question 17
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    Q. If x and y are two rational numbers x+y=y+x which property supports this statement
    answer choices
    closure
    identity
    associative
    commutative
  • Question 18
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    Q. Multiplicative inverse of -7 is
    answer choices
    1/7
    7
    -1/7
    0
  • Question 19
    180 seconds
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    Q. What should be added to -7/8 to get -3/2
    answer choices
    -5/8
    5/8
    1/4
    -1/4
  • Question 20
    120 seconds
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    Q. Multiplicative inverse of -2/5 X -3/7
    answer choices
    35/6
    -6/35
    -35/6
    6/35
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