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Math practice test MCQ: if a x (b −c) is 8 for a = 2, b = 10 and c = 6 then a x b − a x c is equal to with options (−8), 12, 10 and 8 for online jobs competitive tests preparation for teachers pre-employment screening. Free math revision notes to learn rules of integers quiz with MCQs to find questions answers based online learning tests.

MCQ: If a x (b −c) is 8 for a = 2, b = 10 and c = 6 then a x b − a x c is equal to

1. (−8)
2. 12
3. 10
4. 8

D

MCQ: If a, b and c are integers, then according to associative law of multiplication ( a x b ) x c must be equal to

1. a x ( b + c )
2. ( a − b ) x c
3. (a + b ) + c
4. a x b + a x c

C

MCQ: If average income of four friends is \$825. If income of three friends is \$800, \$750 and \$850 then income of fourth friend is

1. \$900
2. \$850
3. \$800
4. \$825

A

MCQ: For any two integers a and b, commutative law of addition states that

1. a x b + a = b x a + b
2. b + a = b x a
3. b + ( a x b ) = a − ( a x b)
4. a + b = b + a

D

MCQ: If −2 x −7 x 2 = 28 then −7 x 2 x −2 is equal to

1. 14
2. (−14)
3. 28
4. (−28)

C