Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 4/10 of 6/40?"
410 × 640 is 350.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/10×6/40 4/10×12/40 4/20×6/40 4/10×6/80 12/10×6/40 4/10×18/40 4/30×6/40 20/10×6/40 4/10×30/40 4/50×6/40 28/10×6/40 4/10×42/40 4/70×6/40
© everydaycalculation.com