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13. With 6 working days to a week, how much will a man earn in one week at $4.50 per day?

14. There are 328 books in one case in a classroom, and 197 books in the other case. How many books are in both?

15. A boy in the kindergarten found a bag containing 62 marbles. He gave his brother 15. How many did he keep?

16. Nine boys furnished a clubroom, each paying the same amount. Find how much each paid, if the total cost was $11.25.

17. From a flock of 320 sheep, 176 were sold. How many remained?

18. I have $525 in the bank, $125 in my safe, and $3.50 in my pocket. How much money have I altogether?

19. How much will 8 yards of picture wire cost at 3 cents

per foot?

20. At Christmas time a factory owner gave away 288 pounds of candy. If each employee received 4 pounds, how many were employed in the factory?

TABLES FOR REFERENCE

MEASURE FOR LENGTH

English System

12 inches (in.)

1 foot (ft.) 3 feet

=1 yard (yd.) 51 yards or 162 feet = 1 rod (rd.) 320 rods

=1 mile (mi.) 1 mi. =320 rd. = 1760 yd.=5280 ft. =63,360 in.

Metric System

10 millimeters (mm.)=1 centimeter (cm.)
10 centimeters =1 decimeter (dm.)
10 decimeters

=1 meter (m.)
1 meter

=39.37 inches 1 yard

=.9144 meter

Surveyor's Units of Length

7.92 in.

=1 link 25 links

=1 rod 100 links=4 rd. =1 chain 80 chains=5280 ft.=1 mile

Other Units of Length

4 in. =1 hand (used in measuring height of horses) 6 ft. =1 fathom (used in measuring depth of water) 1.15 mi.= 1 knot (used in measuring distances at sea)

COUNTING

12 units

=1 dozen (doz.)
12 dozen

=1 gross (gro.)
24 sheets of paper=1 quire
500 sheets

=1 ream

UNITED STATES MONEY

10 mills (m.)=1 cent (ct. or ¢)
10 cents = 1 dime (di.)
10 dimes =1 dollar ($)
100 cents =1 dollar

MEASURE FOR ANGLES AND ARCS

60 seconds ("')=1 minute (0) 60 minutes =1 degree (0) 694 miles

=1 degree of latitude

MEASURE FOR TIME

60 seconds (sec.) = 1 minute (min.)
60 minutes =1 hour (hr.)
24 hours

=1 day (da.) 7 days

=1 week (wk.) 365 days =1 common year (yr.) 366 days

=1 leap year 12 months

- 1 year 360 days

=1 commercial year =1 decade

10 years 100 years

=1 century

WEIGHTS PER BUSHEL

Corn on ear

=70 lb. Potatoes, wheat

= 60 lb.
Onions

=57 lb.
Rye, shelled corn = 56 lb.
Turnips, sweet potatoes =55 lb.
Apples, peaches

=48 lb.
Barley, buckwheat =48 lb.
Oats

=32 lb.

DRY MEASURES

2 pints=1 quart (qt.)
8 quarts=1 peck (pk.)
4 pecks =1 bushel (bu.)

WEIGHTS

16 ounces =1 pound (lb.)
100 pounds =1 hundredweight (cwt.)
2000 pounds=1 ton (t.)

FORMULAS

Angles 1. Sum of the angles of a triangle: a+b+c=180 2. Complementary angles:

a+b

90 3. Supplementary angles:

a+b = 180

=

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