Find the number from each of the following expanded forms:(i) 7 × 10

1.	Find the number from each of the following expanded forms:(i) 7 × 104 + 6 × 103 + 0 × 102 + 4 × 101 + 5 × 100(ii) 5 × 105 + 4 × 104 + 2 × 103 + 3 × 100(iii) 9 × 105 + 5 × 102 + 3 × 101(iv) 3 × 104 + 4 × 102 + 5 × 100
Answer» (i) Given 7 × 10⁴ + 6 × 10³ + 0 × 10² + 4 × 10¹ + 5 × 10⁰ = 7 x 10000 + 6 x 1000 + 0 x 100 + 4 x 10 + 5 x 1 = 70000 + 6000 + 0 + 40 + 5 = 76045 (ii) Given 5 × 10⁵ + 4 × 10⁴ + 2 × 10³ + 3 × 10⁰ = 5 x 100000 + 4 x 10000 + 2 x 1000 + 3 x 1 = 500000 + 40000 + 2000 + 3 = 542003 (iii) Given 9 × 10⁵ + 5 × 10² + 3 × 10¹ = 9 x 100000 + 5 x 100 + 3 x 10 = 900000 + 500 + 30 = 900530 (iv) Given 3 × 10⁴+ 4 × 10² + 5 × 10⁰ = 3 x 10000 + 4 x 100 + 5 x 1 = 30000 + 400 + 5 = 30405

Find the number from each of the following expanded forms:(i) 7 × 104 + 6 × 103 + 0 × 102 + 4 × 101 + 5 × 100(ii) 5 × 105 + 4 × 104 + 2 × 103 + 3 × 100(iii) 9 × 105 + 5 × 102 + 3 × 101(iv) 3 × 104 + 4 × 102 + 5 × 100

Answer»

(i) Given 7 × 10⁴ + 6 × 10³ + 0 × 10² + 4 × 10¹ + 5 × 10⁰

= 7 x 10000 + 6 x 1000 + 0 x 100 + 4 x 10 + 5 x 1

= 70000 + 6000 + 0 + 40 + 5

= 76045

(ii) Given 5 × 10⁵ + 4 × 10⁴ + 2 × 10³ + 3 × 10⁰

= 5 x 100000 + 4 x 10000 + 2 x 1000 + 3 x 1

= 500000 + 40000 + 2000 + 3

= 542003

(iii) Given 9 × 10⁵ + 5 × 10² + 3 × 10¹

= 9 x 100000 + 5 x 100 + 3 x 10

= 900000 + 500 + 30

= 900530

(iv) Given 3 × 10⁴+ 4 × 10² + 5 × 10⁰

= 3 x 10000 + 4 x 100 + 5 x 1

= 30000 + 400 + 5

= 30405