Solutions by everydaycalculation.com
490 + 990 is 1390.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/90+9/90 4/90+18/90 12/90+9/90 4/90+27/90 20/90+9/90 4/90+45/90 28/90+9/90 4/90+63/90
© everydaycalculation.com