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RATIO AND PROPORTION.

Review pages 16, 26, 36, 46, 56, 66, 76, 86, and 96.

1. A 1-ft. square equals what part of a 2-ft. square? 2. A 1-ft. cube equals what part of a 2-ft. cube?

3. A 2-ft. square equals what part of a 3-ft. square? 4. A 2-ft. cube equals what part of a 3-ft. cube?

5. A 2-yd. square equals how many times a 1-yd. square? 6. A 2-yd. cube equals how many times a 1-yd. cube? 7. A 3-yd. sq're equals what part of a 4-yd. square? (a) A 10-rod square equals what part of a 12-rd. sq're? (b) A 12-rd. sq're equals what part of a 16-rd. sq're? (c) A 12-rd. sq're equals what part of a 24-rd. sq're? (d) A 12-rd. sq're equals what part of a 36-rd. sq're? 8. A 3-ft. cube equals what part of a 4-ft. cube? (e) A 3-ft. cube equals what part of a 5-ft. cube? (f) A 3-ft. cube equals what part of a 6-ft. cube ? (g) A 3-ft. cube equals what part of a 9-ft. cube?

9. A 1-ft. square equals what part of a 1-ft. square? (h) A 1-ft. cube equals what part of a 1-ft. cube? 10. A 1-ft. sq're equals how many times a 1-ft. sq're? (i) A 1-ft. cube equals how many times a 4-ft. cube? 11. The surface of a 1-foot cube equals what part of the surface of a 2-foot cube?

(j) The surface of a 2-ft. cube equals what part of the surface of a 3-ft. cube?

(k) The surface of a 1-ft. cube equals what part of the surface of a 1-yd. cube?

(1) If a 1-inch cube of silver is worth $3.60, how much is a 3-inch cube of the same metal worth?

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11. 48 is 66% of
12. 36 is -% of 48.

(j) Find 66% of $756.

(k) $756 is 66% of what?
(1) $450 is what % of $600 ?

Review pages 57 and 58.

13. 60% of 75 is
14. 75 is 60% of
15. 20 is -% of 40.

(m) Find 60% of $810.
(n) $810 is 60% of what?
(0) $84 is what % of $210?

Review pages 67 and 68.

16. 80% of 60 is
17. 60 is 80% of
18. 50 is -% of 60.

Review pages

19. 371% of 24 is
20. 24 is 371% of
21. 24 is -% of 80.

(p) Find 80% of $640.

(q) $640 is 80% of what?
(r) $550 is what % of $660?

77, 78, 87, and 88.

(s) Find 371% of $576.
(t) $576 is 371% of what?
(u) $675 is what % of $750?

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9. 75 is -% more than 60.§ 60 is -% less than 75.

10. Alice has $40; Jane has $50; Mary has $60.
(g) Jane has what per cent more than Alice?
(h) Mary has what per cent more than Jane?
(i) Mary has what per cent more than Alice?
(j) Jane has what per cent less than Mary?
(k) Alice has what per cent less than Jane?
(1) Alice has what per cent less than Mary?
(m) Alice's money equals what % of Jane's money?
(n) Alice's money equals what % of Mary's money?
(0) Jane's money equals what % of Alice's money?
(p) Jane's money equals what % of Mary's money?
(q) Mary's money equals what % of Alice's money?
(r) Mary's money equals what % of Jane's money?

*First find 1% of 300.

First find 1% of 750.

Let

the number sought, the base; then 40

275 is how many more than 60? 15 is what % of 60?

and 1 fourth of x, or § of x.

1. 궁

=

Review pages 113 and 123.

hundredths. (a) =

thousandths.

(b) Change .275 to a common fraction and reduce it to its lowest terms. (c) .375. (d) .425.

(e) .575.

Review pages 133 and 143.

(f) .625.

(g) Find the cost of 6.28 acres of land at $2.75 an A.* (h) Find the cost of 3.46 tons of coal @ $6.75 a ton.

(6.25 ÷ 5 units.)
(6.25 ÷ 5 tenths.)

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(6.25 5 hundredths.)
(36' divided by 5 units.)
(36.0 5 tenths.)

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(36.00 ÷ 5 hundredths.)
(36.000 5 thousandths.)
(57. 26 divided by 7 units.)
(57.26 ÷ 7 tenths.)
(57.26 ÷ 7 hundredths.)

(i) Divide 6.25 by 5.
(j) Divide 6.25 by .5
(k) Divide 6.25 by .05.
(1) Divide 36 by 5.
(m) Divide 36 by .5.
(n) Divide 36 by .05.
(0) Divide 36 by .005.
(p) Divide 57.26 by 7.
(q) Divide 57.26 by .7.
(r) Divide 57.26 by .07.
(s) Divide 57.26 by .007.
(t) Divide 67.5 by 25.
(u) Divide 67.5 by 2.5.
(v) Divide 67.5 by .25.
(w) Divide 67.5 by .025.
(x) Divide 6.75 by 25.
(y) Divide 6.75 by 2.5.

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(57.260 7 thousandths.) (67.5 divided by 25 units.) (67.5+ 25 tenths.) (67.50' 25 hundredths.) (67.500 25 thousandths.) (25 units in 6 units = 0., etc.) (6.7'5 ÷ 25 tenths.)

*Require the pupil to put the work on the blackboard and to explain by telling (1) the cost of 1 hundredth of an acre; (2) of 8 hundredths; (3) of 1 tenth; (4) of 2 tenths; (5) of 1 acre; (6) of 6 acres; (7) of 6.28 acres. How many decimal places in the product? How many in the multiplicand? How many in the multiplier?

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