# Write the following numbers in the expanded forms:

279404, 3006194, 2806196, 120719, 20068

**Solution:**

Expanded form of number means expressing a number using powers of 10 as exponents.

Let's expand the given numbers.

(i) 279404

= 2 × 100000 + 7 × 10000 + 9 × 1000 + 4 × 100 + 0 × 10 + 4 × 1

= 2 × 10^{5} + 7 × 10^{4} + 9 × 10^{3} + 4 × 10^{2} + 0 × 10^{1} + 4 × 10^{0}

(ii) 3006194

= 3 × 1000000 + 0 × 100000 + 0 × 10000 + 6 × 1000 + 1 × 100 + 9 × 10 + 4 × 1

= 3 × 10^{6} + 0 × 10^{5} + 0 × 10^{4} + 6 × 10^{3} +1 × 10^{2} + 9 × 10^{1} + 4 × 10^{0}

(iii) 2806196

= 2 × 1000000 + 8 × 100000 + 0 × 10000 + 6 × 1000 + 1 × 100 + 9 × 10 + 6 × 1

= 2 × 10^{6} + 8 × 10^{5} + 0 × 10^{4} + 6 × 10^{3} +1 × 10^{2} + 9 × 10^{1} + 6 × 10^{0}

(iv) 120719

= 1 × 100000 + 2 × 10000 + 0 × 1000 + 7 × 100 + 1 × 10 + 9 × 1

= 1 × 10^{5} + 2 × 10^{4} + 0 × 10^{3} + 7 × 10^{2} + 1 × 10^{1} + 9 × 10^{0}

(v) 20068

= 2 × 10000 + 0 × 1000 + 0 × 100 + 6 × 10 + 8 × 1

= 2 × 10^{4} + 0 × 10^{3} + 0 × 10^{2} + 6 × 10^{1} + 8 × 10^{0}

**☛ Check: **NCERT Solutions Class 7 Maths Chapter 13

**Video Solution:**

## Write the following numbers in the expanded forms: 279404, 3006194, 2806196, 120719, 20068

Maths NCERT Solutions Class 7 Chapter 13 Exercise 13.3 Question 1

**Summary:**

The following numbers in the expanded forms: 279404, 3006194, 2806196, 120719, 20068 are (i) 2 × 10^{5} + 7 × 10^{4} + 9 × 10^{3} + 4 × 10^{2} + 0 × 10^{1} + 4 × 10^{0}, (ii) 3 × 10^{6} + 0 × 10^{5} + 0 × 10^{4} + 6 × 10^{3} +1 × 10^{2} + 9 × 10^{1} + 4 × 10^{0}, (iii) 2 × 10^{6} + 8 × 10^{5} + 0 × 10^{4} + 6 × 10^{3} +1 × 10^{2} + 9 × 10^{1} + 6 × 10^{0}, (iv) 1 × 10^{5} + 2 × 10^{4} + 0 × 10^{3} + 7 × 10^{2} + 1 × 10^{1} + 9 × 10^{0}, (v) 2 × 10^{4} + 0 × 10^{3} + 0 × 10^{2} + 6 × 10^{1} + 8 × 10^{0}

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