Solutions by everydaycalculation.com
821 + 1021 is 67.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/21+10/21 8/21+20/21 8/42+10/21 8/21+10/42 24/21+10/21 8/21+30/21 8/63+10/21 8/21+10/63 40/21+10/21 8/21+50/21 56/21+10/21 8/21+70/21
© everydaycalculation.com