Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/42 of 5/40?"
2142 × 540 is 116.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 21/42×10/40 21/84×5/40 21/42×5/80 63/42×5/40 21/42×15/40 21/42×25/40 21/42×35/40
© everydaycalculation.com