Find the values of the following expressions: (a) (- 5) × (18 + (- 3)); (b) (- 7) × 4 × (- 1): Class 7
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Expert Answer
Find the values of the following expressions: (a) (- 5) × (18 + (- 3)); (b) (- 7) × 4 × (- 1): Class 7
Question 1.
Find the values of the following expressions: Class 7
(a) (- 5) × (18 + (- 3))
(b) (- 7) × 4 × (- 1)
(c) (-2) × (-1) × (-5) × (- 3)
Solution:
(a) (- 5) × (15) = -75
(b) (- 7) × (- 4) × 1 = 28
(c) (- 2) × (-1) × (- 5) × (- 3) = 30
Question 2.
Find the values of the following expressions: Class 7
(a) (- 27) + 9
(b) 84 ÷ (-4)
(c) (- 56) ÷ (- 2)
Solution:
(a) -3
(b) - 21
(c) 28
Question 3.
Find the integer whose product with (- 1) is: Class 7
(a) 27
(b) - 31
(c) - 1
(d) 1
(e) 0
Solution:
(a) -27
(b) 31
(c) 1
(d) -1
(e) 0