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25. Find the perimeter of the plot; of the lawn; of the garden; of the flower bed; of the walk.

Find the area in square yards :
26. Of the plot. 28. Of the flower bed.
27. Of the lawn. 29. Of the walk.

30. How much will it cost to fence the plot at $34 per rod ?

31. How much will it cost to pave the walk at $1.55 per square yard ?

32. How much will it cost to spade the flower bed at 5 cents per square yard ?

33. How much will it cost to sod the lawn, excluding the flower bed, at $0.25 per square yard ?

34. A board 16 ft. long contains 9 sq. ft. Find its width.

35. A room is 20 ft. long, 16 ft. wide, and 10 ft. high. How much will it cost to plaster the walls and ceiling at 20 cents a square yard ?

36. How many gallons of water are there in a tank 12 ft. long, 8 ft. wide, and 6 ft. deep if it is half full ?

37. Find the cost of 40 boards, each 14 ft. long, 18 in. wide, and 1 in. thick, at $ 20 per M.

38. A city 5 miles long and 3 miles wide is equal in area to how many farms of 160 acres each ?

39. How many sods 16 in. square will be required to turf a lawn 106 ft. 8 in. long and 50 ft. wide ?

40. What will be the cost of painting the outside of a house 48 ft. long, 30 ft. wide, and 20 ft. high, with 2 coats of paint, at 18 cents a square yard ?

PERCENTAGE

Per cent means by the hundred or hundredths. The sign for it is %.

We may express the per cent of a number either as a common fraction or a decimal.

Thus, 6% = 160 = .06; 6% of 500 means too of 500, which equals 30; or, expressed decimally, .06 of 500 = 30.

2% of a number ineans tấo or .02 of a number. 25% of a number means to or .25 of a number.

1. What term in common fractions corresponds to the number before the sign %? to the sign % ?

2. What expresses the numerator and what indicates the denominator of the fractions represented by the following:

1% ? 20%? 40% ? 90%?

6% ? 30 %? 75% ? 100% ? 3. Find 6% of 100.

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16.8% of 75
17. .08 of 75
18. 187 of 75
19. 33 of 300

331
20. of 300

100
21. 331 % of 300

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Changing per cents to equivalents.

Since 5%=.05=160 = 2, these expressions may be called equivalents.

1. Give the fractional and decimal equivalents for 10 %; 6 %; 4%; 20 %; 25 %.

5.

Read the following equivalents : 2. 1%, 20%, .20, }

,.

100' 121 3. 121%, .12), 100'

6. 8, 80%,.80, 4 4. 4840%, .40, 4 7. 871, 873%,.871, 5

100 8. Change the fractions }, , , $ to their equivalent decimals and per cents; also š, s, š, z. =

1= 8)1.00

or 121% .20

.121 f = 2 x .20 = .40 or 40%

*= 3 x .12} = .37} or 371 % 3 x.20 = .60 or 60 %

=5 .121 = .62] or 621 % = 4x .20 = .80 or 80%

x = 7 *.121 = .871 or 871%

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25.

Change to their equivalent decimals and per cents :
9. 1
13. i
17. }

21. 10. } 14. à 18.

19. % 12. 1 16. 1 20. }

24. }

22.

26.

11.

15.

23.

27. } 28. 1o

Give the products rapidly: 29. 2x.33} 32. 5x.121 30. 5x.163 33. 74.121 31. 3 x.121 34. 3 x.83

35. 4x.12)
36. 6*.121
37. 2x.15

38. 4*.011 39. 3x.16 40. 4*.163

Memorize the following table:

= 50%
= 331%

= 66%% 1=25% = 75%

ž= 20%
= 40%
= 60%
= 80%
k=163%

= 831% =121% B=371%

=621% x=871%

i=81%

= 413% To = 64% 20 = 5% 25 = 4%

Name rapidly the fractional equivalents of the following per cents :

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Write the equivalents of the following in decimals, thus : 1%=.01; 32%=.32; 1%=.002; etc. 61. 1% 67.6% 73. 50%

79. 13% 62. 32% 68. 3%

74. 3% 80. 131% 63. 1% 69. 11% 75. 6%

81. $% 64. 2% 70. 1% 76. 1%

82. 100% 65. 161% 71. 4%

77. 7%

83. 123% 66. 1% 72. 431% 78. 3%

84. 127%

Finding a given per cent of a number. Recite the following thus : Look at “ 663%,think “ ”. 1. 663% of 18.

12. 371% of $ 7200. 2. 331% of 90.

13. 121% of $6400. 3. 50% of $500.

14., 75% of $4800. 4. 25% of $2000.

15. 663% of $999. 5. 75% of 16 inches.

16. 80% of 60 sheep. 6. 20% of 100 yards

17. 60% of 75 horses. 7. 40% of 60 feet.

18. 40% of 90 miles. 8. 60% of 40 miles.

19. 871% of $160. 9. 80% of 75 gallons.

20. 621% of $240. 10. 163% of $6000.

21. 371% of $880. 11. 831% of $1200.

22. 121% of 24.

Written Work 1. A man had 100 cows and sold 25% of them. How many did he sell?

25% = .25

100 cows

.25

As 25% = .25 we multiply 100 by .25. The 500

result is 25, the number sold. 200 25.00 number sold Find results decimally: 2. 50% of 750 4. 40% of 8.75 6. 32% of 1000 3. 25% of 85.5 5. 28% of 840 7. 75 % of 980

8. John earns $21.60 per month, and spends 75% for clothes. How much do his clothes cost him ?

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