Question 1 (Page number 14) - Patterns in Products - Chapter 1 Class 7 - Large Numbers Around us (Ganita Prakash)

Transcript

Question 1 Find quick ways to calculate these products: (a) 2 × 1768 × 50 2 × 1768 × 50 = 2 × 1768 × 𝟏𝟎𝟎/𝟐 = 1768 × 100 = 1,76,800 Question 1 Find quick ways to calculate these products: (b) 72 × 125 [Hint: 125 = 1000/8] 72 × 125 = 72 × 𝟏𝟎𝟎𝟎/𝟖 = 9 × 1000 = 9,000 Question 1 Find quick ways to calculate these products: (c) 125 × 40 × 8 × 25 125 × 40 × 8 × 25 = 125 × 40 × 8 × 𝟏𝟎𝟎/𝟒 = 125 × 40 × 2 × 100 = 125 × 4 × 10 × 2 × 100 = 125 × 8 × 10 × 100 = 1000 × 1000 = 10,00,000