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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

MEAP Preparation - Grade 7 Mathematics
1.136 Multiplication of Integers

To multiply a pair of integers:
  • If both numbers have the same sign, their product is the product of their absolute values, i.e., their product is positive.
  • If the numbers have opposite signs, their product is the opposite of the product of their absolute values, i.e., their product is negative.
  • If one or both of the integers is 0, their product is 0.

Examples:

  • Product of two positive integers: Just multiply the numbers.
    5 x 4 = 20

  • Product of two negative numbers: Take the product of their absolute values.
    (-4) (-5) = |-4| |-5| = 4 5 = 20

  • Product of a negative and a positive number: Take the product of their absolute values and give the result a negative sign.
    -5 x 4 = |-5| |4| = 5 4 = 20, change result to -20, so (-5) 4 = -20.

  • If any integer is 0: The product is 0.
    4 x 0 = 0
    -5 x 0 = 0
    0 x 4 = 0
    0 x-9 = 0

Remember the following points:

1. The product of two positive integers is a positive integer.
2. The product of a positive integer and a negative integer is a negative integer.
3. The product of two negative integers is a positive integer.

More examples:
1. (-2)x3 = (-2)+(-2)+(-2) = -6.
2. 2x3 - 2+2+2 = 6.
3. 2x(-3) = (-3)+(-3) = -6.
4. (-2)x(-1) = +2.


Directions: Answer the following questions. Also write at least 10 examples of your own.
Q 1: The product of a positive integer and a negative integer is a ________?
positive integer
negative integer

Q 2: (8)x(-8) = ?
64
-64

Q 3: 9x8 = ?
72
-72

Q 4: (-7)x(8) = ?
56
-56

Q 5: (-8)x(-10) = ?
-80
80

Q 6: 12x5 = ?
-60
60

Q 7: (-2)x(-5) = ?
10
-10

Q 8: (-20)x(3) = ?
60
-60

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!


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