Question 11 - Figure it out - Page 93, 94, 95 - Chapter 4 Class 7 - Another Peek beyond the Point (Ganita Prakash II)

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Question 11 Sort the following expressions in increasing order: (a) 245.05 × 0.942368 (b) 245.05 × 7.9682 (c) 245.05 ÷ 7.9682 (d) 245.05 ÷ 0.942368 (e) 245.05 (f) 7.9682 We can solve this by looking at how the operations change the base number (245.05). Dividing by a number larger than 1 makes a number smaller Multiplying by a number less than 1 makes it smaller Dividing by a number less than 1 makes it larger Multiplying by a number larger than 1 makes it larger The sorted order (smallest to largest) is: (f) 7.9682 : Smallest number (c) 𝟐𝟒𝟓.𝟎𝟓÷𝟕.𝟗𝟔𝟖𝟐 : It would be approx 245/8 = 30.6 (a) 𝟐𝟒𝟓.𝟎𝟓 × 𝟎.𝟗𝟒𝟐𝟑𝟔𝟖 : It would be approx 230.9 (e) 245.05 : The original number (d) 𝟐𝟒𝟓.𝟎𝟓÷𝟎.𝟗𝟒𝟐𝟑𝟔𝟖 : It would be approx 260.0 (b) 𝟐𝟒𝟓.𝟎𝟓 × 𝟕.𝟗𝟔𝟖𝟐 : It would be approx 1952.6