Turn 0.375 into a simple fraction

Question

Some decimals are eighths in disguise. Solve in your head. Write 0.375 as a fraction in lowest terms. Aim: under 10 seconds.

Accepted Answer

Read it as 	frac{375}{1000} and simplify. Both divide by 125: \frac{375}{1000} = \frac{3}{8}. Faster still: recognise 0.375 = 3 	imes 0.125 = 3 	imes 	frac18 = 	frac38. Takeaway. Learn the fingerprints of the eighths, 0.125, 0.375, 0.625, 0.875, and you can convert them to fractions on sight without any division. Any "clean" three-place decimal ending in 5 is a strong hint you are looking at an eighth.

Turn 0.375 into a simple fraction

Your answer

More Mental Math questions