.24/65

/24

.9860

MULTIPLICATION OF DECIMALS.

NOTE. Be sure to change the points before multiplying.

83

To find of 24.65, we first find ro of it, which (page 81) is .2465. If .2565 is ro,

24 times .2465, which is (page 77) 5.9160.

will be

4.930

1. 64.06

many ones ?

2. Nineteen are how many times 3? 7? 4? 5? 8? 6? 9? 2? 10?

3. Twenty-seven are how many times 9? 6? 4? 3? 7?

8? 5? 10?

4. If 6 is of some number, what is 1 fourth of the same number?

5. 9 is 3 fourths of what number?

6. 8 is 4 ninths of what number?

7. 9 is 3 tenths of what number?

8. 10 is 5 sevenths of what number? 9. 12 is 3 fifths of what number?

10. If I plant of my garden with peas, with beans, with potatoes, and with tomatoes, how many eighths shall I have left for other things?

11. A man who had a fence to build, found that it took him 4 days to build 2 fifths of it. How many days did it take him to build the whole fence?

12. What will 5 pictures cost at 83 each?

13. What will 12 hats cost at $33 each?

14. How many oranges will it require to give each of 9 boys 13 oranges?

15. 5 times 4 and 2 of 4 are how many ?

16. 9 times 7 and 1⁄2 17. 5 times 10 and 18. 7 times 6 and

of 7 are how many?

of 10 are how many? of 6 are how many?

19. What will 6 boxes of raisins cost at $33 a box?

20. A boy gave ‡ of a dollar for a hat, $1% for a vest, and had $33 remaining. How much had he at first?

21. 14 is 2 sevenths of what number? 22. 15 is 3 halves of what number?

23. 24 is 8 fifths of what number?

MISCELLANEOUS PROBLEMS.

NOTE. Do not compel each child to perform all.

85

1. The following represents cash received and cash paid out in a store for the month of March.

for each day, and for the month.

Find the difference

2. Multiply 10% by 9.

3. Reduce 45 bu. 3 pk. 5 qt. to quarts.

4. How many hours are there in 3 wk. 5d. 10 hr.?

5. How many square rods are there in a rectangular field 40 rd. long and 20 rd. wide?

6. How much will it cost to fence this field at $1 a rod ?

7. In a rectangular block of stone 6 ft. long and 2 ft. square, how many cubic feet?

8. How many square feet in the entire surface of this block of stone?

9. Bought a horse for $216, and sold him at a loss of 10%. How much was the loss?

10. Multiply 4.02 by 10. By 100.

86 TO FIND COST OF ARTICLES AT 331 EACH, AND AT 209 EACH.

Since 33 is of $1, it follows that three articles will cost $1; hence any number of articles at 333 each will cost as many dollars as the number of articles.

Since 20 is of $1, it follows that 5 articles will cost $1; hence any number of articles at 20 each will cost as many dollars as the number of articles.

3. How many square feet in a rectangle 2 ft. long and 1 ft. wide? In one 6 ft. long and 5 ft. wide? In one 9 ft. long and 7 ft. wide?

4. A man sees 15 pigeons on one branch of a tree and 9 pigeons on another branch. If 7 should fly away, how many would be left on the tree?

5. A farmer had 23 chickens, but 7 of them were stolen, and 5 were carried off by a hawk. How many chickens had he left?

6. Mr. S. is 44 years old, and his youngest son is 8 years old. What is the difference in their ages?

7. A man, having $23, gave $6 for a hat. How many dollars had he left?

20 qt.?

8. What part of a gallon is 1 quart? 2 qt.? 3 qt.? 4 qt.? 9. How many pints in 8 qt.? 11 qt.? 15 qt.? 10. At 4 a pint, what will 5 qt. of milk cost? 11. How many bushels in 12 pk.? 20 pk.? 32 pk.? 40 pk.? 12. What part of a bushel is 1 pk.? 2 pk.? 3 pk.? 4 pk.? 13. How many weeks in 35 days? In 49 days?

14. What per cent of 120 is 60?

15. What per cent of 12 is 3?

16. $70 is 10% of how many dollars?

17. A dealer paid $5 for a hat, and sold it at 20% profit. What was the selling price?