Question 4 - Special Calculators - Chapter 1 Class 7 - Large Numbers Around us (Ganita Prakash)

Transcript

Question 4 Creative Chitti is a different kind of calculator. It has the following buttons: +1, +10, +100, +1000, +10000, +100000 and +1000000. It always has multiple ways of doing things. “How so?”, you might ask. To get the number 321, it presses +10 thirty-two times and +1 once. Will it get 321? Alternatively, it can press +100 two times and +10 twelve times and +1 once.Method 1: +10 pressed 32 times = 10 × 32 = 320 +1 pressed 1 time = 1 Total: 320 + 1 = 321 ✅ Method 2: +100 pressed 2 times = 100 × 2 = 200 +10 pressed 12 times = 10 × 12 = 120 +1 pressed 1 time = 1 Total: 200 + 120 + 1 = 321 ✅ Try one more creative way (Method 3): Let’s mix it up further. +100 pressed 3 times → 300 +10 pressed 2 times → 20 +1 pressed 1 time → 1 Total: 300 + 20 + 1 = 321 ✅