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236.

1. Write in words 1 001; 2010; 4 101; 5 110. 2. Write in words 560; 506 ; 5 006; 5 060. 3. Write in words 2 102; 1021; 1012; 2 201.

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239. Write in figures : One thousand twenty. One thousand thirty-one. One thousand forty-two. One thousand fifty-three. One thousand sixty-four. One thousand seventy-five. One thousand eighty-eight. One thousand ninety-nine. Two thousand ninety. Three thousand eleven. Three thousand ninety-nine. Four thousand one.

Five thousand seventeen. Six thousand fifty-five. Six thousand ninety-two. Six thousand one. Six thousand twenty. Seven thousand eleven. Seven thousand thirty. Eight thousand ten. Eight thousand one. Eighty thousand seventy. Nine thousand nine. Nine thousand ninety.

ADDITION

240. Oral Problems.

1. Mr. Smith sold 8 pounds of sugar to one customer, and 9 pounds to another; how many pounds did he sell to the two ?

2. A foot-rule is 12 inches long; a yardstick is 24 inches longer; how many inches long is a yardstick ?

3. In one week a cow gave. 21 gallons of milk; the next week she gave 18 gallons; how many gallons did she give in the two weeks?

4. The first week of school there were present 23 girls and 24 boys; how many pupils ?

5. A fruit-dealer sold to one boy 8 oranges, to another 3 oranges, and to another 5 oranges; how many oranges did the three boys buy?

6. Henry lives 12 blocks east of the post-office, and Fred lives 14 blocks west of the post-office; how many blocks from Henry's to Fred's ?

7. James has 17 marbles; if he should buy 12 more, how many would he then have?

241. In Addition we find the number of units in two or more numbers.

The whole number of units in two or more numbers is called their Sum.

242. Oral Drills.

1. How many are 2+2+2+2+2?
2. How many are 3+3+3+3+3?
3. Begin with 2 and add by twos to 24.
4. Begin with 3 and add by threes to 36.
5. Begin with 4 and add by fours to 48.
6. Begin with 5 and add by fives to 60.
7. Begin with 6 and add by sixes to 72.
8. Begin with 7 and add by sevens to 84.
9. Begin with 8 and add by eights to 96.
10. Begin with 9 and add by nines to 108.

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295

245. Add 174, 863, and 295.

EXPLANATION. I. Write the figures in columns of units, tens, and hun 174 dreds.

II. Begin with the units' column, thus: 5, 8, 12 : 12 units. The 12 units are 1 ten and 2 units.

1332 III. Write 2 under the units' column; then to the tens' column add the 1 ten taken from the 12 units, thus: 1, 10, 16, 23 : 23 tens. The 23 tens are 2 hundreds and 3 tens.

IV. Write 3 under the tens' column; then to the column of hundreds add the 2 hundreds taken from the 23 tens, thus: 2, 4, 12, 13:13 hundreds. The 13 hundreds are 1 thousand and 3 hundreds.

V. Write 3 under the hundreds' column, and 1 to the left in the thousands' place.

246. Written Problems.

1. A farmer bas five fields; in the first there are 37 acres; in the second, 48 acres; in the third, 51 acres; in the fourth, 79 acres; and in the fifth, 160 acres ; how many acres in the five fields ?

2. Add three hundred one, seven hundred seventy, and five hundred twenty-six. m 3. A farmer paid for a plow $12, for a cart $27, and for a wagon $78. How much did he pay in all ?

4. What is the number that is 45 greater than 72?

5. On one shelf are 42 books, on a second shelf 51 books, and on a third shelf, 49 books. How many books are on the three shelves ?

6. John picked cotton six days: Monday, 127 pounds; Tuesday, 134 pounds ; Wednesday, 135 pounds; Thursday, 152 pounds; Friday, 143 pounds; Saturday, 76 pounds. How many pounds in all ?

7. An orchard has 37 peach-trees, 28 apple-trees, 14 pear-trees, and 79 of other kinds of fruit-trees. How many trees in the orchard ?

8. What is the sum of 19, 29, 978 ?

9. A steamer towed 5 barges loaded with corn: in the first, 50 390 bushels ; in the second, 39 367 bushels; in the third, .47 219 bushels ; in the fourth, 49 597 bushels; in the fifth, 42 346 bushels; how many bushels in all ?

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