Evaluate each of the following:-
a) (-30) ÷ 10 b) 50 ÷ (-5) c) (-36) ÷ (-9)
d) (-49) ÷ 49 e) 13 ÷ [(-2) + 1] f) 0 ÷ (-12)
g) (-31) ÷ [(-30) + (-1)] h) [(-36) ÷ 12] ÷ 3 i) [(-6) + 5] ÷ [(-2) + 1]
Solution:
We will be using the concept of the division of integers to solve the given questions.
a) -30 ÷ 10 = -30 × 1/10
= -30 / 10
= -3
b) 50 ÷ (-5) = 50 × 1/(-5)
= 50/(-5)
= -10
c) -36 ÷ (-9) = -36 × 1/(-9)
= 36/9
= 4
d) -49 ÷ 49 = -49 × 1/49
= -49/49
= -1
e) 13 ÷ [(-2) + 1] = 13 × 1/(-2 + 1)
= 13/(-1)
= -13
f) 0 ÷ (-12) = 0 × 1/(-12)
= 0/(-12)
= 0
g) -31 ÷ [(-30) + (-1)] = -31 × 1/[-30 + (-1)]
= -31 × 1/(-31)
= 1
h) [-36 ÷ 12] ÷ 3 = (-36 × 1/12) × 1/3
= -36/12 × 1/3
= -3 × 1/3
= -1
i) [-6 + 5] ÷ [-2 + 1] = (-1) × 1/(-1)
= -1/(-1)
= 1
☛ Check: NCERT Solutions for Class 7 Maths Chapter 1
Video Solution:
Evaluate each of the following: a) (-30) ÷ 10 b) 50 ÷ (-5) c) (-36) ÷ (-9) d) (-49) ÷ 49 e) 13 ÷ [(-2) + 1] f) 0 ÷ (-12) g) (-31) ÷ [(-30) + (-1)] h) [(-36) ÷ 12] ÷ 3 i) [(-6) + 5] ÷ [(-2) + 1]
NCERT Solutions Class 7 Maths Chapter 1 Exercise 1.4 Question 1
Summary:
The value of each of the following: a) (-30) ÷ 10 b) 50 ÷ (-5) c) (-36) ÷ (-9) d) (-49) ÷ 49 e) 13 ÷ [(-2) + 1] f) 0 ÷ (-12) g) (-31) ÷ [(-30) + (-1)] h) [(-36) ÷ 12] ÷ 3 i) [(-6) + 5] ÷ [(-2) + 1] are a) -3 , b) -10 ,c) 4, d) -1 , e) -13 , f) 0 , g) 1 , h) -1, and i) 1
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