Solve 1,25*10^-12*4*10^3

$$1,25 \cdot 10 ^ { - 12 } \cdot 4 \cdot 10 ^ { 3 }$$

Evaluate

$$0,000000005$$

Solution Steps

To multiply powers of the same base, add their exponents. Add -12 and 3 to get -9.

$$1,25\times 10^{-9}\times 4$$

Calculate 10 to the power of -9 and get \frac{1}{1000000000}.

$$1,25\times \frac{1}{1000000000}\times 4$$

Multiply 1,25 and \frac{1}{1000000000} to get \frac{1}{800000000}.

$$\frac{1}{800000000}\times 4$$

Multiply \frac{1}{800000000} and 4 to get \frac{1}{200000000}.

$$\frac{1}{200000000}$$

Factor

$$\frac{1}{2 ^ {9} \cdot 5 ^ {8}} = 5 \times 10^{-9}$$