Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 20/40 of 21/40?"
2040 × 2140 is 2180.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/40×42/40 20/80×21/40 20/40×21/80 60/40×21/40 20/40×63/40
© everydaycalculation.com