Find cost of 261⁄2 dozen eggs, at 181⁄2c a dozen.
| 26 × 18 | = | 4.68 | |
| 1⁄2 of 44 | = | .22 | |
| 1⁄2 × 1⁄2 =1⁄4 | 4.90 | 1⁄4 | |
| Ans. $4.90. | |||
When both fractions are 1⁄2. To product of the whole numbers, add 1⁄2 of their sum, and annex 1⁄4 to answer.
Of 533⁄4 pounds of butter, at 283⁄4c per pound.
| 53 × .28 | = | 14.84 | |
| 3⁄4 of 81 | = | .60 | 3⁄4 |
| 3⁄4 × 3⁄4 =9⁄16 | 15.45 | ||
| Ans. $15.459⁄16. | |||
To the product of the whole numbers, add 3⁄4 of their sum, plus the square of 3⁄4.
Of 131⁄4 yards of flannel, at 311⁄4c per yard.
13 × .31 = 4.03 + .11 = 4.14, Ans.
To 4.03 add .11, 1⁄4 of 44 (13 + 31). The 1⁄16 (1⁄4 × 1⁄4) is disregarded.