Solutions by everydaycalculation.com
510 + 210 is 710.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 5/10+4/10 5/20+2/10 5/10+2/20 15/10+2/10 5/10+6/10 5/30+2/10 5/10+2/30 25/10+2/10 5/50+2/10 5/10+2/50 35/10+2/10 5/10+14/10 5/70+2/10 5/10+2/70
© everydaycalculation.com