Q1.
Shrenu is baking cakes for her shop. She needs 3 kg 500 g flour. Her kitchen scale measures only in grams. What should her kitchen scale show for 3 kg 500 g of flour?
Answer
Her scale should show 3,500 g.
Shrenu's flour comes in two pieces — 3 whole kilograms and 500 loose grams. Change only the kilogram piece, then join the two.
- Change the kg part. 1 kg = 1,000 g, so 3 kg = 3 × 1,000 = 3,000 g.
- Keep the g part as it is. It is already in grams: 500 g.
- Add the two pieces. 3,000 g + 500 g = 3,500 g.
3 kg = 3 × 1,000 = 3,000 g
3 kg 500 g = 3,000 g + 500 g = 3,500 g
3 kg 500 g = 3,000 g + 500 g = 3,500 g
Why it happens: A scale can only speak one language. Shrenu's scale speaks grams. So she must say the same weight in grams before the scale can understand her.
Check it yourself: Go backwards. 3,500 g = 3,000 g + 500 g = 3 kg + 500 g = 3 kg 500 g ✓