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469. Slate Problems.
1. From a piece of cloth containing 174 yards, 54 yards and 4} yards were sold. How many yards were left ?
2. A boarding school uses 3 quarts of milk a day for 7 pupils. If there are 77 pupils in the school, how many gallons of milk will be needed per day? Per week?
3. A man pays $140.40 for 3 pieces of cloth. What is the length of each piece, if the cloth costs $ 1.80 per yard ?
4. I buy 12$ pounds coffee at 28 cents per pound, and twice as many pounds at 24 cents per pound. If I give the storekeeper $10, how much change will I receive ?
5. A merchant pays $30 for 65 vases. He sells 17 of them at 40 cents each, 23 at 60 cents each, and receives 48 cents each for the others. What is his profit?
6. Mrs. Jones buys į dozen chairs, a bureau for $17.40, and a mirror for $13.00. She pays for all $38.80. What do the chairs cost apiece ?
7. In selling 40 yards of velvet that cost me $1.40 per yard, I gained $ 24.00. What did I charge per yard ?
8. How much heavier is a cheese weighing 405 pounds than one which weighs 26% pounds ?
9. A farmer sold 364 dozen eggs to one storekeeper, 53 dozen to another, 174 dozen to a third, 85 dozen to a fourth, and 11; dozen to a fifth. How much did he receive for them at 12 cents per
dozen? 10. A butcher going to market with $174.40, bought 15 sheep at $8 each. If he had had $25.60 more, he could have bought 4 hogs also. What were the hogs worth apiece ?
11. A scholar having to multiply a number by 30, mistook the 3 for a 5, and his answer was 600. What is the correct answer?
12. Forty hats were bought for $104. At what price apiece should they be sold to make 40 cents on each hat? At what price per dozen?
13. A farmer had 7 bushels of potatoes. He used 2 bushels and 3 pecks for seed. What would the remainder be worth at 20¢ per peck ?
14. A butcher buys an ox weighing 1,200 pounds alive, at 6 cents per lb. When killed and dressed, its weight is of the live weight. What is the butcher's profit, if he sells the meat at an average of 15 cents
1b. ? 15. The weight of a tub of butter, including the weight of the tub, is 481 pounds. The tub weighs 91 lb. What is the butter worth at 24 cents per pound?
16. One boy had 15 marbles, another had 19, a third had 17, a fourth had 13. What was the average number of marbles for each boy?
17. A teacher divided 200 foreign postage stamps among the eight boys of his class. He gave one-fourth of them to the first boy, one-fifth of the remainder to the second boy, and then divided the rest equally among the other six boys. How many did each receive?
18. A merchant sold 174 yards of muslin, 144 yards of silk, and as many yards of calico as of the other two together. How many yards did he sell in all ?
19. A dealer mixed 21 pounds of black tea costing 32 cents per pound with 14 pounds of green tea costing 40 cents per pound. How much per pound does the mixed tea cost him?
20. A man can do f of a certain piece of work in a day; another man can do f of the same work in a day. What part of the work can both together do in a day? How long would it take both together to finish the work?
8252} = 11 20. 1,7281; = 12 21. 2,46011 - 10 22. 3,9261 - 13
NOTATION AND NUMERATION.
472. The largest number that can be written with six figures is 999,999.
1,000,000 is called one million.
Write in figures two million. Three million. Four million. Six million. Eight million. Ten million.
473. Read the following: 1. 1,234,567
6. 11,034,065 2. 3,000,560
7. 14,602,500 3. 5,009,008
8. 17,386,925 4. 7,090,070
9. 20,007,316 5. 9,843,000
11. 30,100,021 12. 35,000,600 13. 401,023,160 14. 760,030,020 15. 980,750,000
474. Write in figures :
1. Seventy-eight million, one hundred eight thousand, ninetysix.
2. Three million, eight.
4. Nine hundred eighty-seven thousand, six hundred fiftyfour.
5. Twenty million, thirty thousand, forty.
6. Three hundred seven million, nine hundred four thousand, six.
7. Nine hundred ninety-nine million, nine hundred ninetynine thousand, nine hundred ninety-nine.
8. Four hundred seventy-six million, three hundred thousand.
9. Thirty-four thousand, eighteen. 10. Sixty-four million, thirty-two thousand, sixteen. Add the foregoing.