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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

MEAP Preparation - Grade 7 Mathematics
1.34 Multiplicative Identity and Multiplicative Inverse

  1. If a/b is a rational number then
    a/b x 0 = 0 x a/b = 0.
    Example: 7/3 x 0 = (7x0)/3 = 0/3 = 0
  2. Multiplicative Identity:
    If a/b is a rational number then
    1 x a/b = a/b x 1 = a/b
    Example: 3/5 x 1 = 1 x 3/5 = 3/5
    Therefore, one is the identity element for multiplication in rational number.
  3. Multiplicative Inverse:
    For every rational a/b (a, b are not equal to zero), there will be a rational number b/a is such that
    a/b x b/a = 1
    If the product of two numbers is one, we say that each number is the multiplicative inverse of the other.
    Example: 2/3 x 3/2 = (2x3)/(3x2) = 6/6 = 1

Directions: Answer the following questions and write the answer without simplifying. Also write at least 10 examples of your own.
Q 1: 50/3 x 0 = _____ ?
Answer:

Q 2: 6/8 x 8/6 = _____ ?
Answer:

Q 3: a/b x b/a = _____ ?
Answer:

Q 4: 0 x -7/8 = _____ ?
Answer:

Q 5: 5/7 x 7/5 = _____ ?
Answer:

Q 6: 5/7 x 1 = _____ ?
Answer:

Q 7: 1 x a/b = a/b x 1 = _____ ?
Answer:

Q 8: 1 x -7/8 = _____ ?
Answer:

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Question 10: This question is available to subscribers only!


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