Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 10/80 of 4/21?"
1080 × 421 is 142.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/80×4/21 10/80×8/21 10/80×4/42 30/80×4/21 10/80×12/21 10/80×4/63 50/80×4/21 10/80×20/21 70/80×4/21 10/80×28/21
© everydaycalculation.com