Solutions by everydaycalculation.com
1560 + 660 is 720.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/60+6/60 15/60+12/60 45/60+6/60 15/60+18/60 75/60+6/60 15/60+30/60 15/60+42/60
© everydaycalculation.com