Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 10/20 of 4/21?"
1020 × 421 is 221.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/20×8/21 10/40×4/21 10/20×4/42 30/20×4/21 10/20×12/21 10/60×4/21 10/20×4/63 50/20×4/21 10/20×20/21 70/20×4/21 10/20×28/21
© everydaycalculation.com