Question

Write in an expanded form? Place commas correctly for each of the numbers.

(a) 74836
(b) 574021
(c) 8907010
(d) 99999999
(e) 100001
(f) 545

[3 MARKS]

Answer 1

(a) 74,836 = 7 $\times$ 10000 + 4 $\times$ 1000 + 8 $\times$ 100 + 3 $\times$10 + 6 $\times$ 1

(b) 5,74,021 = 5 $\times$ 100000 + 7 $\times$ 10000 + 4 $\times$ 1000 + 2$\times$ 10 + 1$\times$1

(c) 89,07,010 = 8 $\times$ 1000000 + 9 $\times$ 100000 + 7 $\times$ 1000 + 10 $\times$ 1

(d) 9,99,99,999 = 9$\times$10000000 + 9$\times$1000000 + 9$\times$100000 + 9$\times$10000 + 9$\times$1000 + 9$\times$100 + 9$\times$10 + 9$\times$ 1

(e) 1,00,001 = 1$\times$100000 + 0$\times$10000 + 0$\times$1000 + 0$\times$100 + 0$\times$10+1$\times$ 1

(f) 545 = 5$\times$100 + 4$\times$10 + 5 $\times$ 1