Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 12/90 of 3/10?"
1290 × 310 is 125.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/90×3/10 12/90×6/10 12/90×3/20 36/90×3/10 12/90×9/10 12/90×3/30 60/90×3/10 12/90×15/10 12/90×3/50 84/90×3/10 12/90×21/10 12/90×3/70
© everydaycalculation.com