Numbers Step by Step: An Elementary Arithmetic by Frank Rigler

Author:Frank Rigler
Language: eng
Format: epub
Publisher: O.P. Barnes
Published: 1913-03-25T05:00:00+00:00

"Into how many equal parts did he di\dde it?"

"Two." _

Show this by writing 2 in each half.

"In how many parts did he plant roses?"

"One." _

Show this by writing 1 over 2 in right half circle.

"In how many parts did he plant geraniums?"

"One." _

Show this by writing 1 over 2 in left half of circle.

The figure now appears

He had 1 garden; | was planted in roses, and ^ was left for geraniums. 1 — ^ = |.

^ of a garden planted in roses and J in geraniums make one garden. ^ + ^ = 1.

The figure, ( ^ ^H should now be placed on the

^

blackboard in such a position as to form the beginning of the diagram on page 364. II. Drill.

(a) A field in the shape of a rectangle was divided into halves by a fence built across it. Draw figure and write numerical expression.

(b) A fishing line was cut into halves. Draw figure and write numerical expression.

(c) A pint of water was divided into two equal parts. Draw the figure and-express numerically.

(d) A pound of butter was divided into two equal parts. Draw figure and express numerically. (Use circle.)

REVIEW DRILLS

(1) 673 X $.05 = ? (2) Find ^ of $16.94.

UNCLASSIFIED PROBLEMS

1. Find f of $224.

2. A baseball team won 94 games and lost 68. How many games did it play?

3. A farmer sold 80 bushels of potatoes. He then had 224 bushels left. How many bushels had he at first?

4. Jennie spent 65 minutes each day in practicing her music lesson. How many minutes did she practice in 38 days?

5. A peck of oats was di\dded into 2 equal parts. Draw figure and write numerical expression.

6. A dealer bought 205 pecks of potatoes from one farmer, 306 pecks from another, and 461 pecks from a third. If the potatoes were placed in 4 bins so that each bin had the same number af pecks, how many pecks were in each bin?

7. If it took an average of 7 minutes to mark each examination paper, how many papers did a teacher mark in 294 minutes?

8. Find the value of 288 sheep, worth an average price of $4.15 apiece.

9. Three cans of coal oil contained, one 14, one 17, and one 21 gallons. Part of the oil was sold and the remainder put into a barrel. If the barrel received 27 gallons, how many gallons were sold?

10. A man worked 8 hours a day for-7 days making hogsheads. If it took him 2 hours to make each hogshead, how many did he make in the 7 days?

11. 1304 feet of string were used on 4 kites. If the kite strings were of equal length, how long was each?

12. It requires 171 days to build a certain house, and men have been working on it 147 days. In how many days will the house be finished?

13. 8 horses cost 712 dollars. What did 3 of the horses cost, if all were bought at the same price?

LESSON SIXTY

REDUCTION OF ARTIFICIAL UNITS

(a) An artificial plurality expressed in one unit, changed so as to be expressed in a smaller unit.

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