Question

Write six hundred billion,two hundred thousand, two in expanded firm using exponents

Please check
600, 000, 200, 002
(6×10^11)+(2×10^6)+(2×10^1)

Answer 1

so close, but all your exponent are off by 1

should be 6x10^10 + 2x10^5 + 2x10^0

You can see it best by looking at your last term
your last part should be 2x10^0 or just plain + 2
(yours would have a value of 20 not 2)

e.g. 200,000 = 2 x 100,000 = 2x10^5
10 = 10^1
100 = 10^2
1000=10^3 ----> the exponent matches the number of zeros.