Solutions by everydaycalculation.com
620 ÷ 640 is 21.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/20÷6/40 6/20÷12/40 6/40÷6/40 6/20÷6/80 18/20÷6/40 6/20÷18/40 6/60÷6/40 30/20÷6/40 6/20÷30/40 42/20÷6/40 6/20÷42/40
© everydaycalculation.com