Example. What cost 5-1/3 yards at 18c a yard?
| 1 | 8 | c | ||||||||||||
| 5 | - | 1 | / | 3 | ||||||||||
| _ | _ | _ | _ | _ | _ | |||||||||
| 1 | 8 | x | 5 | = | 9 | 0 | ||||||||
| 1 | 8 | x | 1 | / | 3 | = | 6 | |||||||
| _ | _ | _ | _ | _ | _ | |||||||||
| 9 | 6 | c |
When both numbers contain a fraction,
First, multiply the whole numbers together,
Second, multiply the, lower whole number by the upper fraction;
Third, multiply the upper whole number by the lower fraction;
Fourth, multiply the fractions together;
Fifth, add all the results for the correct answer.
Example. What cost 12-2/3 pounds of butter at 18-3/4c per pound?
| 1 | 8 | - | 3 | / | 4 | |||||||||||||||
| 1 | 2 | - | 2 | / | 3 | |||||||||||||||
| _ | _ | _ | _ | _ | _ | _ | _ | |||||||||||||
| 1 | 8 | x | 1 | 2 | = | 2 | 1 | 6 | ||||||||||||
| 1 | 2 | x | 3 | / | 4 | = | 9 | |||||||||||||
| 1 | 8 | x | 2 | / | 3 | = | 1 | 2 | ||||||||||||
| 3 | / | 4 | x | 2 | / | 3 | = | 6 | / | 1 | 2 | = | 1 | / | 2 | |||||
| _ | _ | _ | _ | _ | _ | _ | _ | |||||||||||||
| $ | 2 | . | 3 | 7 | - | 1 | / | 2 |