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? 2. Express ten on your slates. 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. 15. Express the numbers from forty-one to fortynine. 16. When two figures are written side by side, what does the figure at the right represent? 17. What does the figure at the left represent? 18. Write all the numbers from one to forty-nine. 19. Express in words: 24, 32, 38, 47, 18, 29, 10, 31, 49, 30. LESSON XXXI. 1. Express 5 tens, or fifty: 50. 2. How many figures are required to represent the number fifty? 3. What is the figure at the right? 4. What is the figure at the left? 5. How many tens are there in fifty? 7. Write the numbers from fifty-one to fifty-nine. 9. Write the numbers from sixty to sixty-nine. 10. Express the number seventy. 11. How many tens are there in seventy? 12. How many ones are there in seventy? How is this shown? 13. Write the numbers from seventy to seventynine. Read them. 14. Write the numbers from eighty to eightynine. Read them. 15. How many tens and ones are there in eightyseven? In eighty-five? In eighty-eight? 16. Express in figures the numbers from eighty to eighty-eight. 17. Write 8 tens and 9 ones, or eighty-nine. 18. Express 9 tens, or ninety: 90. 19. Write the numbers from ninety to ninety-nine. 20. Ninety-nine and one more, make how many? One hundred. 21. How many tens are 9 tens and 1 ten? 22. How many tens are there in one hundred? 23. One hundred is expressed thus: 100. The figure 0 at the right shows that there are no ones, the O next to it shows that there are no tens, and the figure 1 shows that there is one hundred. When three figures are written side by side, the figure in the first place at the right represents ONES, the one next to it TENS, and the one at the left HUNDREDS. LESSON XXXII. 1. If you pay 1 cent for a pear, how many cents will you pay for 2 pears? 2. How many cents are 1 cent and 1 cent? 3. If you pay 1 cent for a slate-pencil, how many cents will you pay for 3 pencils? 4. How does the price of 3 pencils compare with the price of 1 pencil? 5. If a fig costs one cent, how many times 1 cent will 4 figs cost? 6. How many chairs are 5 times 1 chair? This sign takes the place of the word times. Thus, 2 times 1 are 2, is written 2X1=2, and is read 2 times 1 equals 2. 7. If 1 marble costs 1 cent, what will 6 marbles cost? 6 X 16. 8. Seven boys each own a sled. How many sleds do they all own? 7X1=? 9. Each of 8 boys has a pair of skates. How many pairs do they all own? 8X1=? 10. Nine men each own an acre of land. How many acres do they all own? 9X1=? 11. How many are 10 times 1? 10 X 1=? 12. How many are 3 times 1? 13. If you pay 1 cent for an cents will you pay for 7 apples? 3X1=? apple, how many 14. If each pupil, in a class of 9 pupils, answers 1 question, how many questions will they all answer? |