1.6 = 8/5 So n miles = 8n / 5 km And m km = 5m / 8 miles Fraction multiplication is actually much easier than decimal multiplication imo. I'm surprised so m

1.6 = 8/5 So n miles = 8n / 5 km And m km = 5m / 8 miles Fraction multiplication is actually much easier than decimal multiplication imo. I'm surprised so many people seem to avoid it. Keeping track of where the decimal point should be is a significant cognitive load.