Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 10/20 of 12/21?"
1020 × 1221 is 27.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/20×24/21 10/40×12/21 10/20×12/42 30/20×12/21 10/20×36/21 10/60×12/21 10/20×12/63 50/20×12/21 10/20×60/21 70/20×12/21 10/20×84/21
© everydaycalculation.com