Solutions by everydaycalculation.com
3690 + 390 is 1330.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/90+3/90 36/90+6/90 36/90+9/90 36/90+15/90 36/90+21/90
© everydaycalculation.com