Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 10/21 of 12/42?"
1021 × 1242 is 20147.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/21×12/42 10/21×24/42 10/42×12/42 10/21×12/84 30/21×12/42 10/21×36/42 10/63×12/42 50/21×12/42 10/21×60/42 70/21×12/42 10/21×84/42
© everydaycalculation.com