Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 1/2 of 21/40?"
12 × 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: 1/2×42/40 1/4×21/40 1/2×21/80 3/2×21/40 1/2×63/40 1/6×21/40 5/2×21/40 1/10×21/40 7/2×21/40 1/14×21/40
© everydaycalculation.com