NCERT Solutions Ganita Prakash (Part 2) Chapter 2 Figure it Out (4)

Find the values of: (a) 14 × (– 15) (b) – 16 × (– 5) (c) 36 ÷ (– 18) (d) (– 46) ÷ (– 23)

A freezing process requires that the room temperature be lowered from 32°C at the rate of 5°C every hour. What will be the room temperature 10 hours after the process begins?

A cement company earns a profit of ₹8 per bag of white cement sold and a loss of ₹5 per bag of grey cement sold. [Represent the profit/ loss as integers.] (a) The company sells 3,000 bags of white cement and 5,000 bags of grey cement in a month. What is its profit or loss? (b) If the number of bags of grey cement sold is 6,400 bags, what is the number of bags of white cement the company must sell to have neither profit nor loss.

Replace the blank with an integer to make a true statement. (a) (– 3) × _____ = 27 (b) 5 × _____ = (– 35) (c) _____ × (– 8) = (– 56) (d) _____ × (– 12) = 132 (e) _____ ÷ (– 8) = 7 (f) _____ ÷ 12 = – 11