Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 5/10 of 20/42?"
510 × 2042 is 521.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 5/10×40/42 5/20×20/42 5/10×20/84 15/10×20/42 5/10×60/42 5/30×20/42 25/10×20/42 5/50×20/42 35/10×20/42 5/70×20/42
© everydaycalculation.com