Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/50 of 4/10?"
2150 × 410 is 21125.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/50×4/10 21/50×8/10 21/50×4/20 63/50×4/10 21/50×12/10 21/50×4/30 21/50×20/10 21/50×4/50 21/50×28/10 21/50×4/70
© everydaycalculation.com