Solve 7.64*10^-3-3.9*10^-4

$$7.64 \times 10 ^ { - 3 } - 3.9 \times 10 ^ { - 4 }$$

Evaluate

$$0.00725$$

Solution Steps

Calculate 10 to the power of -3 and get \frac{1}{1000}.

$$7.64\times \frac{1}{1000}-3.9\times 10^{-4}$$

Multiply 7.64 and \frac{1}{1000} to get \frac{191}{25000}.

$$\frac{191}{25000}-3.9\times 10^{-4}$$

Calculate 10 to the power of -4 and get \frac{1}{10000}.

$$\frac{191}{25000}-3.9\times \frac{1}{10000}$$

Multiply 3.9 and \frac{1}{10000} to get \frac{39}{100000}.

$$\frac{191}{25000}-\frac{39}{100000}$$

Subtract \frac{39}{100000} from \frac{191}{25000} to get \frac{29}{4000}.

$$\frac{29}{4000}$$

Factor

$$\frac{29}{2 ^ {5} \cdot 5 ^ {3}} = 0.00725$$