Question

5÷10.31

Answer 1

Solution. Rewrite 10.31 as a fraction

$$10.31=10\frac{31}{100}=\frac{1031}{100}$$

Number 1031 is prime.

Therefore

$$5÷10.31=5÷\frac{1031}{100}=5\times\frac{100}{1031}=\frac{500}{1031}\approx 0.485$$

Answer.

$$\frac{500}{1031}\approx 0.485$$