Εικόνες σελίδας
PDF
Ηλεκτρ. έκδοση

1. How many does 3 from 5 leave? 4 from 8? 7 from 9? 1 from 4? 2 from 6? 5 from 7?

2. Take 1 from 9. 2 from 10. 3 from 11. 9 from 18. 7 from 14. 10 from 15. 6 from 15. 4 from 13. 3. How much is 7 less 4? 17 less 4? 27 less 4? 47 less 4? 87 less 4? 37 less 4? 97 less 4?

4. How much is 8-2? 98-2? 108-2? 68-2? 168-2? 268-2? 768-2? 778-2?

5. Subtract 7 from 9.

107 from 109. 7 from 8.

27 from 29. 97 from 99. 207 from 208.

31-10? 51-10? 81

6. How much is 11-10? -10? 13-10? 23-10? 123-10? 223-10? 7. How much remains, if we take 20 from 40? 20 from 47? 20 from 67? 20 from 89? 20 from 39 ? 8. 30 from 50 leaves how many? 50 from 90? 50 from 91? 60 from 82? 40 from 78? 70 from 83 ? 9. 21 from 43? 56 from 67? 71 from 85? 38 from 59? 86 from 98? 31 from 77? 44 from 59?

10. If a man bought a lamp for 5 dollars and sold it for 8, how many dollars did he make?

MODEL. If a man bought a lamp for 5 dollars and sold it for 8, he must have made the difference between 5 and 8 dollars, or 3 dollars. Ans. 3 dollars.

11. What is the profit on a barrel of flour, bought for 8 dollars and sold for 12 dollars?

12. Mary is 13 years old and Sarah 19; two years hence, what will be the difference in their ages?

13. How many more boys than girls are there in a school, if there are 75 boys and 32 girls?

14. In a stable there were 23 horses and 46 stalls; how many empty stalls were there?

[ocr errors]

15. A gentleman now 87 years old was married 56 years ago; how old was he when he was married? 16. A boy carrying 39 eggs in a basket, fell and broke 19 of them; how many were left whole ?

17. Ninety-three persons were wrecked in a storm. Eighty were saved; how many perished?

18. A person who had 88 melons, sold 67 of them; how many had he left?

19. How much does a merchant make on goods bought for 68 dollars and sold for 88?

20. A drover, having 96 sheep, divided them into 2 flocks. He put 25 in one flock; how many in the other? If from the second flock he sold 40, how many had he left in that flock? How many in all ?

21. What change must a boy, who pays 15 cents for a ball, get for a quarter of a dollar?

[ocr errors]

SECTION 5.-1. How much does 3 from 12 leave? 3 from 22? 3 from 32 ? 3 from 52? 3 from 72? 2. 5 from 11 leaves how many? 5 from 21? 5 from 51? 5 from 91 ? 5 from 31? 5 from 71?

3. 7 from 10? 7 from 20? 7 from 80? 7 from 60? 7 from 30? 7 from 70? 7 from 50? 7 from 40?

4. 8 from 14? 8 from 54? 8 from 94? 8 from 24? 2 from 11? 2 from 71? 2 from 31? 2 from 81 ? 5. How much is 10-9? 30-9? 60-9? 13

4? 93-4? 83-4? 83-5? 13-5?

6. How much is 12-6? 42-6? 62-6? 17-9? 57-9? 37-9? 10-2? 90-2? 100-2? 200-2 ?* 16-8? 100-8? 300-8? 12-7? 92-7? 102-7?

SECTION 1. Addition is the process of uniting two or more numbers in one, called their Sum. Two and one are three; we have added 2 and 1, and 3 is their sum.

Addition is denoted by an erect cross +, called Plus, placed between the numbers to be added. 2+1 is read two plus one, and means that 2 and 1 are to be added.

Two short horizontal lines denote equality. 2+1=3, is read two plus one equals three, and means that the sum of 2 and 1 is 3.

1. What is the sum of 2 and 3?
2. What is the sum of 2 and 4?
3. What is the sum of 3 and 1?
4. What is the sum of 3 and 8 ?
5. What is the sum of 4 and 5?
6. What is the sum of 4 and 9?
7. How many are 5 and 8?
8. How many are 5 and 9?
9. How many are 6 and 2?
10. How many are 6 and 1?

2 and 9?

2 and 7?
3 and 4?

3 and 6 ?
4 and 2?

4 and 10?

5 and 1 ?

5 and 5?

5 and 3?

5 and 6 ?

6 and 9 ?

6 and 5 ?

6 and 6?

6 and 8?

[blocks in formation]

10+10? 10+9?

17. What is the value of 10+1?

10+5? 5+10? 10+8? 10+4? 1+9? 1+5?

18. How many are 2 and 5? 5 and 2? How much is 6+4? 4+6? 3+7? 7+3?

19. When two numbers are to be added, does it make any difference which is taken first?

20. How many are 4 and 8? How many are 1 and 3 and 8? How many are 2 and 2 and 8 ?

21. How many are 3 and 9? How many are 1 and 2 and 9? How many are 2 and 1 and 9?

22. How many are 8 and 10? How much is 3+5+10? How much is 2+2+4+10?

23. How many are 6 and 7? How much is 3+3 How much is 1+4+1+7?

+7?

24. How many are 9 and 8? How much is 5+ 4+8? How much is 3+5+1+8?

25. How many are 8 and 5? How many are 8 and 3+2? How many are 8 and 4+1 ?

26. How many are 10 and 7? 2+8 and 4+3 ? 10 and 1+6? 1+6+10?

27. Mary and her seven sisters just filled a bench; how many did the bench hold?

28. You have four fingers on each hand; how many fingers have you on both hands?

29. A newsboy bought five daily and seven weekly papers; how many papers had he in all?

30. If Ruth has seven pins in one pin-cushion, and six in another, how many pins has she in both?

31. Guy pulled six ears of corn on Monday, and ten on Tuesday; how many did he pull both days? 32. Ten birds were sitting on a steeple, when six more alighted; how many were there then?

33. Henry had two cents, and his father gave him ten more. Louis had ten cents, and he found two more in the street. Which then had the most?

34. Put four marbles in a bag already containing ten, and how many will you have in the bag?

35. A boy caught six perch, three pickerel, and ten shiners; how many fish did he catch in all ?

36. A baker gave nine loaves to one poor family, and five to another; how many did he give both?

37. How many trees stand beside my lane, if there are ten on one side and three on the other?

38. A mother, having three sons aged two, five, and eight years, gave each as many dollars as he was years old; how many dollars did she give all three ?

39. How many books had Paul, if his father gave him 3, his mother 6, his brother 1, and his sister 7 ?

40. A farmer had four ducks, six geese, and as many chickens as he had ducks and geese put together; how many fowls had he in all ?

SECTION 2.-1. How many are 3 and 2? 13 and 2? 33 and 2 ? 63 and 2? 93 and 2? 103 and 2? 2. What does 2+3 equal? 22+3? 43+2? 53 +2? 83+2? 183+2 ? 193+2 ? 203+2 ?

3. What is the sum of 4 and 5? 5 and 4? 55 and 4? 54 and 5 ? 74 and 5? 75 and 4?

4. How much is 7+2? 107+2? 207+2? 507 +2? 807+2? 1007+2? 4007+2? 5007+2? 5. Add 2 and 6. 62 and 6. 162 and 6. 1062 and 6. 1066 and 2. 166 and 2. 66 and 2. 76 and 2. 6. How much is 3+4? 20+3+4? 30+3+4? 40+3+4? 3+40+4? 60+4+3? 4+3+70?

7. How much is 5+2 ? 50+5+2? 51+5+2?

« ΠροηγούμενηΣυνέχεια »