Fog
1) 30 000 = 3 * 10000= 3 * 10^4
2) 6 400 000 = 64 * 100000 = 64 * 10 ^5
3) 2 000 000 = 2 * 1000000 = 2 * 10^6
4) 150 000 000 = 15 * 10000000 = 15 * 10^7
5) 315 000 000 = 315 * 1000000 = 315 * 10^6
6) 4 200 000 000 = 42 * 100000000 =42 * 10^8
Rita Lewis