Question

5×10^-2×7×10^6
2×10^7​

Answer 1

Answer:

0.04

Step-by-step explanation:

Pls correct me if this starting equation is wrong :P

8×$10^{7}$×$\frac{1.5}{3}$×$10^{-9}$ = 40 000 000× 0.000000001

                        = 0.04

Break down of steps:

$\frac{1.5}{3}$ = $\frac{3}{6}$

    = $\frac{1}{2}$

8×$\frac{1}{2}$ = 4

4×$10^{7}$ = 40 000 000

$10^{-9}$ = 0.000000001

There are 8 zeros in the 0.000000001, so I just shifted the decimal dot from 40 000 000.0 backwards 8 times, which becomes 0.04. This method can only be used when dividing/multiplying by 10, 100, 1000...etc