LESSON XXIX. 1. A man having 18 butter-tubs, sold 3 at one time, 5 at another, and 6 at another. How many tubs had he left? 2. In a room there are 14 flowerpots. There are 4 in one window, 5 in another, and the rest are in the third window. How many are there in the third window? 3. On the first vine there are 12 bunches of grapes, on another there are 3 bunches, and on another 4 bunches. How many bunches more are there on the first vine than on the other two? 12-(3+4)=? 4. How many are 7 and 5 less 3? 7+5-3=? 5. There are 13 boys playing ball, and 5 playing marbles. How many more are there playing ball than there are playing marbles? 13-5=? 6. What is meant by the term addition? What is meant by the term subtraction? 7. Julia is 9 years old, and her sister is 5 years older. What is the age of her sister? 8. Charles is 6 years old, and James is 17 years old. How much older than Charles is James? 9. What number added to 7 will make 15? 10. What number added to 5 will make 12? 11. Begin with 2 and count to 17 by 3's. 12. Count from 19 back to 1 by 3's. 13. What number subtracted from 18 will leave 10? 18-?=10. 18-10=? 14. What number subtracted from 16 will leave 9? 16 -? 9. = 16 9=? 15. In a school of 18 pupils all but 3 study geography. How many study geography? 16. James attended school 17 weeks, but Henry attended only 8 weeks? How many weeks did James attend more than Henry? 17-8=? 17. Julius had written all but 5 lines on a page of his writing-book. If the book had 19 lines on a page, how many had he written? 18. How many are 3+3+2+2-4+5—2+7? 19. How many are 5+7+1—3—2+5—9+8? 20. How many are 6+4+5-3-6-2+8+9? 21. How many are 8-3+2-3+6+2-6+2? 22. How many are 6+8-7-2+5+6+1-4? REVIEW EXERCISES. Find the value of each of the following: 8 2 9 3 8 4 - 25 5 96 16254 7825 111 5 1 2 9 -4 9 - 6 6 69 2 6 8 ∞ ∞ ∞ 2 4 ∞ co 8 Find the value of the following, without using slate: 3+2 4 4 + 6 9 4+2 6+3 2 5+6 8 65-8 5+6 9 When an example has several numbers inclosed in a parenthesis, find the value of those within the parenthesis first, and then of this result, and the rest of the numbers. Thus, 46(3+2—4)=4+6−1; for (3 + 2 — 4 ) = 1. 1. How many quails are there in each group? 3. How many quails are there in two of the groups? 4. How many are 1 ten and 1 ten? 5. Express 2 tens, or twenty: 20. What does the 2 represent? What does the 0 show? 6. Express 2 tens and 1, or twenty-one: 21. 7. Express 2 tens and 2 ones, or twenty-two. 8. Express twenty-three, twenty-four, twenty-five, twenty-six, twenty-seven, twenty-eight, twenty-nine. 9. Read the numbers you have written. 10. How many quails are there in the 3 groups? 11. Express 3 tens, or thirty: 30. What does the figure 3 represent? What does the 0 show? 12. Express 3 tens and 1, or thirty-one. 3 tens and 2 ones, or thirty-two. 13. Express all the numbers from thirty-two to thirty-nine. 14. Express 4 tens, or forty. Express 4 tens and 1, or forty-one. |