ARITHMETIC.

MENTAL

EXERCISES.

ADDITION.

¶ 1.* 1. How many little fingers have you on your right hand? How many on your left?

2. How many eyes have you?

How many on both?

3. If you have two apples in one hand, and one in the other, how many have you in both? How many are two and one, then, put together?

4. How many do your ears and eyes make, counted together? 5. If you have two nuts in one hand, and two in the other, how many have you in both? in both? How many do two and two

make, put together?

6. If you have three pins in one hand, and James puts another in, how many will you have in your hand? How many are three and one then?

7. If you have three pins in one hand, and James puts two more in, how many will you have in your hand? How many are three and two then?

8. If you have four apples in one pocket, and two in the other, how many will you have in both? How many are four and two then?

9. Thomas has four cents, and William has three; how many have they both together? How many are four and three then?

10. You have five pins in one hand, and three in the other; how many have you in both? How many are five and three then?

11. You have four nuts in one hand, and four in the other; how many have you in both? How many are four and four then?

TT T

* The questions in ¶ I and ¶ II are intended for very young children. Older pupils may omit these. But the two remaining sections, and the four tables, will claim an attentive perusal.

12. If you count the fingers and thumb on one hand, and only the fingers on the other, how many will they make? How many are five and four then?

13. How many fingers and thumbs have you on both hands? 14. James has five marbles, and Thomas five; how many have they both? How many are five and five then?

15. How many cents would it take to buy two whistles, if one cost six cents, and the other four? How many are six and four then?

16. If you have eight pins on one sleeve, and two on the other, how many will you have on both? How many are eight and two then?

17. How many legs have two cats and a bird?

18. If I should give you six cents, and you should find five, how many would you have then? How many are six and five

then?

19. If you count all your fingers, thumbs, and nose, how many will they make ?

20. If you buy a picture-book for ten cents, and a pear for two cents, how many cents will pay for both? How many are ten and two then?

21. How much money would you have, if your father should give you seven cents, and your brother six? How many are seven and six then?

22. If you have seven pins in one hand, and seven in the other, how many will you have in both? How many are seven

and seven then?

23. A man bought a chair for three dollars, and a lookingglass for twelve; how much did he give for both? How many are three and twelve then?

24. You give thirteen cents for a spelling-book, and three for an inkstand; how much do they come to? How many are thirteen and three?

Note. The pupil is to recite the above, with the written numbers covered over. The answers to the following questions are to be given by writing them down on the slato at recitation, to test the pupil's knowledge of numbers from one to one hundred.

26. Write down in proper figures, Four; Seven; Eight; Twelve; Eighteen; Twenty-two; Thirty-two; Forty-five; Forty-nine; Fifty-six; Fifty-nine; Sixty-three; Seventy-five; Eighty-seven; Ninety-two; Ninety-seven; Ninety-nine.

27. James has seventy-eight cents, and Rufus eighty-seven cents; which has the most?

28. Thomas has fifty-nine dollars, and William sixty-nine; which has the most? Which is the most, Which is the most, eighty-nine, or ninety-nine? Forty-seven, or seventy-four?

29. Repeat the

30. How many are 2 and 5? 2 and 7? 2 and 10? 2 and 12? 3 and 3? 3 and 9? 3 and 12? 4 and 2? 4 and 6? 4 and 8? 4 and 10? 4 and 12? 5 and 3? 5 and 5? 5 and 9? 5 and 11? 6 and 4? 6 and 7? 6 and 10? 6 and 12? 7 and 2? 7 and 4? 7 and 7? 7 and 9? 7 and 12? 8 and 2? 8 and 5? 8 and 7? 8 and 9? 8 and 10? 8 and 12? 9 and 6? 9 and 9? 9 and 12? 10 and 3? 10 and 4? 10 and 6? 10 and 8? 10 and 11? 10 and 12? 11 and 3? 11 and 5? 11 and 6? 11 and 9? 11 and 12? 12 and 3? 12 and 6? 12 and 9? 12 and 12?

Note. The design of the foregoing and following questions is to prevent the scholar from resting satisfied with saying his table merely by rote, which re quently happens. For, if he can count, he will say it, without making a single addition in his mind.

31. You borrow 12 dollars at one time, and 2 at another; how much have you borrowed in all? How many are 12 and 2? 32. William has 11 cents, and James 11; how many do they both have? How many are 11 and 11?

33. A man bought a cart for 13 dollars, and a plough for 7 dollars; how much did he pay for both? How many are 13

and 7?

How

34. A man bought 10 bushels of rye for 15 dollars, 6 bushels of apples for 6 dollars; how much did he pay for both? many are 15 and 6?

35. William bas 4 marbles in one pocket, 6 ish the other, and

3 in his right hand; how many has he in all? How many are 4, 6 and 3?

36. Peter gave to his companions apples as follows; to James 7, to Henry 9, to William 10; how many did he give away? How many are 7, 9 and 10?

37. Rufus has 12 cents, James 12, and Thomas 2; if Rufus and James should give Thomas all their cents, how many would Thomas have? How many are 12, 12 and 2?

38. You give 16 cents for a knife, 4 cents for an inkstand, and 5 for a lead pencil; how much will all of them come to? How many are 16, 4 and 5?

39. Your brother William gave you 19 cents, your brother John 10, and your cousin 2; how many did you have given you in all? How many are 19, 10 and 2?

40. How many are 6 and 4? 16 and 4? 26 and 4? 36 and 4? 46 and 4? 56 and 4? 66 and 4? 76 and 4? 86 and 4? 96 and 4? 10 and 5? 20 and 5? 40 and 5? 70 and 5? 80 and 5? 6 and 10? 6 and 40? 6 and 70? 7 and 3? 17 and 3? 37 and 3? 57 and 3? 77 and 37 97 and 37 5 and 5? 5 and 10? 5 and 15? 5 and 20? 25 and 5? 30 and 5? 45 and 5? 60 and 5? 75 and 5? 95 and 5? 8 and 4? 18 and 4? 28 and 4? 38 and 4? 48 and 4? 58 and 4? 68 and 4? 78 and 4? 88 and 4? ·98 and 4? 9 and 3? 19 and 3? 29 and 3? 49 and 3? 79 and 3? 89 and 3? 6 and 5? 6 and 15? 6 and 25? 6 and 35? 6 and 45 ? 6 and 65? 6 and 85? 6 and 95?

SUBTRACTION.

¶ II. 1. If you should lose one finger from one hand, how many would you have left on that hand? How many are 4 less 1? Why? Ans. Because 1 and 3 are 4.

2. If you have 5 cents, and give away 2, how many will you have left? How many are 5 less 2 then? Why?

3. If you shut both your little fingers, and leave the other fingers open, how many will be open? How many are 8 less 2? Why?

4. If you have 8 cents, and lose 3, how many will you have left? How many are 8 less 3? Why?

5. If you have 9 cents in a box, and take out 4, how many I will be left in the box? How many are 9 less 4, or 4 from 9? Why?

6. You borrow 8 pins, and pay 4; how many do you still owe? How many are 4 from 8 then? Why?

7. If you have 12 dollars, and lose 2, how many will you have left? How many are 2 from 12 then? Why?