13. Here is a picture of the front part of a schoolroom. You can see 4 children in the first row and 5 children in How many children are there in the

the second row.

14. You can see in the picture 2 boys and 8 girls. How many children can you see in all?

15. 2 children and 8 children are how many children? 16. When we count we use numbers.

We will write the first ten numbers in two ways. In the first line we use words. In the second line we use figures.

NUMBERS TO 100

ORAL EXERCISES

1. Count from ten to twenty. Eleven is written 11; twelve, 12; thirteen, 13; fourteen, 14. Write in figures fifteen, sixteen, seventeen, eighteen, nineteen.

2. Count from twenty to fifty. Twenty is written 20. Twenty means two tens and no ones. Thirty means three tens and no ones. Thirty is written 30.

3. Write in figures forty, fifty, sixty, seventy, eighty, ninety.

4. Thirty-two is written 32. It means 3 tens and 2 ones. 5. Read these numbers and tell what each means:

1. Write in figures and tell what each figure means, thus: thirty-seven, written 37, means 3 tens and 7 ones:

2. In numbering the chapters or lessons in a book, letters called Roman numerals are used. The numbers from 1 to 12 are written in this way:

1. How many marks are // and // /?

5. How many dolls are five dolls and three dolls?

6. How many birds are seven birds and two birds? 7. How many are six and four?

8. How many are seven and three?

9. In answering each question you combined two numbers into one number. We call this adding the numbers. The process of adding numbers is called addition. The sum is the number obtained by adding two or more numbers.

ORAL EXERCISES

1. When numbers are to be added they are usually 3 written this way:

The sum is written below the line in this way:

2

2. Numbers to be added may be written thus: 3 + 5 = 8. We may read this 3 plus-5 equal 8; or, 3 and 5 are 8.

3. Read the addition in this table both ways, thus: 1

NOTE. By covering up the sums in the above table it may be used for drill work in the combinations through 10.

ORAL EXERCISES

1. How many eggs are 3 eggs

and 4 eggs?

2. How many papers are 5 papers and 3 papers? 3. How many kittens are 7 kittens and 2 kittens? 4. Charles wrote 6 letters on Monday and 2 letters on Tuesday. How many letters did he write in the two days?

5. Fred has 8 marbles in one pocket and 2 marbles in another pocket. How many marbles has he in the two pockets?

6. John has 4 blocks and Frank has 3 blocks. How many blocks have John and Frank together?

7. Mary drank 2 glasses of milk and Susan drank 3 glasses of milk. How many glasses of milk did the two girls together drink ?

8. Dick spent 2 cents for candy and 5 cents for a soda. How many cents did he spend in all?

9. There are 7 sparrows on one tree and 2 sparrows on another tree. How many sparrows are there on the two trees?

10. It rained 4 days in May and 6 days in June. How many days did it rain in the two months?

11. Clara has 3 dolls and Mabel has 6 dolls. How many dolls have Clara and Mabel together?

WRITTEN EXERCISES

1. Copy these oblongs and add dots enough in each blank side to make 8 dots in the whole oblong.

2. Call these oblongs cards. Make cards so that the sum of the dots shall be 6; so that the sum shall be 7. 3. Make cards that will show these sums: 5+2; 3+4; 2+7; 6+1; 6+4; 4+4.

4. On these cards which you have made call the dots cents and make a problem for each card.

5. See if you can make five different cards, the sum of the dots on each card to be 10.