Problems of Carrying the Mail

1. A rural mail carrier works 298 days in a year and rides 24 miles each day. How far does he ride in a year?

2. He starts at 8.15 A.M. and returns home at 3.15 P.M. How many hours does he spend on the road in a year? He handled mail during one month as follows:

3. The total number of pieces delivered was how much

how much does he have left from 6 months' salary after

paying $16 a month for his horse's food?

FACTORS AND MULTIPLES

1. 2 X 3 ?

=

2 X 5 = ?

2 X3 X5 =?

2. What must be done with 2 and 3 to obtain 6?

3. With 2 and 5 to obtain 10?

4. With 2, 3, and 5 to obtain 30?

The numbers that are multiplied to produce a number are factors of that number; e.g.

2, 3, and 5 are factors of 30 because 2 × 3 × 5 = 30.

5. What are the factors of 6? Of 4? Of 10?

6. 6+2 =?

10 ÷ 2 = ?

30+ 10 = ?

A number that exactly contains another number is a multiple of that number; e.g.

21 is a multiple of 7. It is also a multiple of 3. A product is always a multiple of its factors.

7. Tell which of the following numbers are multiples, and which are factors:

8. Every number is a multiple of itself. What is the smallest number that is a multiple of 2?

9. What is the smallest multiple of 2 and 3? Of 3 and 4? Of 2, 3, and 4?

10. Name all of the numbers that are exactly contained in 4; in 6; in 8; in 10; in 9.

1. How many inch spaces are there on this rule?
2. How many half-inches make an inch?

3. How many quarter-inches make one half-inch?
4. How many eighth-inches make one quarter-inch?

1. 121 + 73 = ? 2. 181 +223 = ? 3.

4. 29 161 ? 5. 191 +27=?
- =

171⁄2 + 293 = ?

6.

323 + 491 = ?

7. 35ğ+723? 8. 485 - 31 ? 9.

871⁄2 – 373 = ?

c. To what we may change halves and thirds before we add them.

7. Esther has three dolls. In making clothes for them she used yd. of muslin, yd. of gingham, and & yd. of cotton poplin. How much material did she use in all? 8. Vincent bought 2 boxes of screws and gave Wilfred 1 boxes for his shop. How many boxes of screws did Vincent keep?

9. Elton works for Mr. Stone by the hour while out of school. In one week he worked as follows: Monday 14 hr., Tuesday 24 hr., Wednesday 2 hr., Thursday & hr., Friday 1 hr., Saturday 6 hr. How many hours did he work during the week?

2. Find more than . Can you express it in thirds?

How can you express it?

3. Express

more than . In order to add thirds

and ninths, we change the thirds to what?

4. 93 ? 9 is what of 3?

=