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557. Three times 3 tenths equals how many tenths?

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558. The products are 13.6, 30, 3.3, 7, and .396; the ciphers to the right of the decimals, having no value, are omitted in giving the answers.

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563. Where it is necessary, ciphers may be annexed to the right of the decimal in the dividend.

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565. Slate Problems.

31. A franc is 19.3 cents. Find the cost in United States money of goods amounting to 1,250 francs.

32. A merchant bought 1,800 meters of silk. How many yards did he buy, a meter being 39.37 inches?

33. A kilogram is 2.2046 pounds. What is the difference in weight between the English ton of 2,240 lb. and a French ton of 1,000 kilograms?

34. A cubic foot of water weighs 1,000 ounces. How many pounds does a cubic foot of gold weigh, gold being 19.4 times as heavy as water?

35. There are 128 cubic feet in a cord. How many tons of 2,000 lb. are there in a cord of pine wood, the latter being .66 times as heavy as water?

36. A man buys three plots of ground containing 35.27, 17.8, and 40.375 acres, respectively. Find the total cost at $36 per

acre.

37. How many pints are there in 2.375 gallons?

38. What decimal of a peck is a quart?

39. What will be the cost of carrying 468 tons of coal at $0.125 per ton?

40. A farmer sold one-eighth of his farm of 224.2 acres at $62.50 per acre. How much did he receive for it?

41. How long is a post which is 5 feet above water, onehalf of its length in the water, and one-fourth of its length in the mud? (Diagram.)

42. Eight pounds of black tea costing 35¢ per lb. are mixed. with twelve pounds of green tea costing 50 per lb. What is the cost of a pound of the mixed tea?

43. How many bushels, pecks, and quarts, are there in 1,449 pounds of corn weighing 56 lb. per bushel?

MEASUREMENTS.

569. Preliminary Exercises.

Draw a square each side of which is one inch. This is called a square inch.

Draw a rectangle two inches long, one inch wide. How many square inches will it contain?

Draw a rectangle three inches long, two inches wide. Divide it into one-inch squares. Count them. How many are there?

How many square inches in the rectangle? How many square inches in a rectangle 6 inches long, 3 inches wide?

How many square inches in a rectangle 4 inches long, 4 inches wide?

About how long is your slate? About how wide? About how many square inches are there in its surface?

How many square inches are there in a rectangle 12 inches long, 3 inches wide? In a rectangle 1 foot long, 3 inches wide? In a rectangle 1 foot 1 inch long, 4 inches wide?

570. Slate Exercises.

How many square inches in each of the following rectangles?

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571. NOTE. Change each dimension to inches before multiplying.

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