NCERT Exemplar Solutions
Class 6 - Mathematics - Unit 1: Number System - Fill in the Blanks

Question 99

(a) 10 million = ? crore

1. Know the meanings:
   \(1\) million = \(1{,}000{,}000\) (that is, \(10^6\)).
   \(1\) crore = \(10{,}000{,}000\) (that is, \(10^7\)).
2. Find 10 million:
   \(10\) million = \(10 \times 1{,}000{,}000\) = \(10{,}000{,}000\).
3. Compare with crore:
   \(10{,}000{,}000 = 1\) crore.
4. So, 10 million = 1 crore.

(b) 10 lakh = ? million

1. Know the meanings:
   \(1\) lakh = \(100{,}000\) (that is, \(10^5\)).
   \(1\) million = \(1{,}000{,}000\) (that is, \(10^6\)).
2. Find 10 lakh:
   \(10\) lakh = \(10 \times 100{,}000\) = \(1{,}000{,}000\).
3. Compare with million:
   \(1{,}000{,}000 = 1\) million.
4. So, 10 lakh = 1 million.