Solutions by everydaycalculation.com
1st number: 21 0/2, 2nd number: 4/42
This multiplication involving fractions can also be rephrased as "What is 42/2 of 4/42?"
422 × 442 is 21.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/2×4/42 42/2×8/42 42/4×4/42 42/2×4/84 42/2×12/42 42/6×4/42 42/2×20/42 42/10×4/42 42/2×28/42 42/14×4/42
© everydaycalculation.com