Question 4 - Figure it out - Page 39 - Chapter 2 Class 7 - Operations with Integers (Ganita Prakash II)

Transcript

Question 4 - Page 173 Replace the blank with an integer to make a true statement. (a) (– 3) × _____ = 27We know that 3 × 9 = 27 And −1 × −1 = 1 So, (−3) × (−9) = 27 Question 4 - Page 173 Replace the blank with an integer to make a true statement. (b) 5 × _____ = (– 35)We know that 5 × 7 = 35 And 1 × −1 = −1 So, 5 × (−7) = −35 Question 4 - Page 173 Replace the blank with an integer to make a true statement. (c) _____ × (– 8) = (– 56)We know that 7 × 8 = 56 And 1 × −1 = −1 So, 7 × (−8) = −56 Question 4 - Page 173 Replace the blank with an integer to make a true statement. (d) _____ × (– 12) = 132We know that 11 × 12 = 132 And −1 × −1 = 1 So, (−11) × (−12) = 132 Now, ____ ÷ (–8) = 7 ⎕/(−𝟖) = 7 ⎕ = 7 × –8 ⎕ = −56 ∴ −56 ÷ (–8) = 7 Question 4 - Page 173 Replace the blank with an integer to make a true statement. (f) _____ ÷ 12 = – 11Now, ____ ÷ 12 = –11 ⎕/𝟏𝟐 = –11 ⎕ = –11 × 12 ⎕ = −132 ∴ −132 ÷ 12 = –11 Question 4 - Page 173 Replace the blank with an integer to make a true statement. (e) _____ ÷ (– 8) = 7