Exam Questions Marks : 1 Qn. 16 - According to Distributive law of multiplication over addition a x (b+ c) must be equal to a) ax C +b x C b) a xb + axc c) a xb-b Х С A a B. b C С
Answers
Answer:
Q1) According to Distributive Law of Multiplication over Addition, a x ( b + c )
must be equal to
A. a x c − b x c
B. a − b x c − b
C. a x b + a x c
D. a x b − a x c
Q2) Product of -140 and +8 is
(A) 1120 (B) 3200 (C) −1120 (D)−3200
Q3) 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
(A) (−8) (B) 12 (C) 10 (D) 8
Q4) Quotient of -144 and -12 is
(A)12 (B) −12 (C) 16 (D) −16
Q5) By dividing 104 by -13, quotient will be
(A) 9 (B) −9 (C) −8 (D) 8
Evaluate the expression for the given replacement values.
6) Value of xy for x = -4, y = -7 is ______.
A) 28 B) -28 C) 3 D) -11
7) Value of xy for x = 36, y = -2 is ___.
A) 18 B) -34 C) -18 D) 34
8) Value of xy = ___ for x = -3, y = 0
(A) 3 B) -3 C) 0 D) undefined
9) -1 (-1) (1) (-1) (1) (-1) (-1)
(A) 1 (B) -1 (C)7 (D) - 7
10) By solving -2 + 8 + ( -24 ⁄ -2), the answer is
(A) −18 (B)18 (C)−12 (D)12
Answer:
b
Step-by-step explanation:
a×b+a×c
let a,b,c are rational numbers
a×(b+c)=(a×b)+(a×c)