Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 10/20 of 10/81?"
1020 × 1081 is 581.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/20×20/81 10/40×10/81 30/20×10/81 10/20×30/81 10/60×10/81 50/20×10/81 10/20×50/81 70/20×10/81 10/20×70/81
© everydaycalculation.com