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 ? 6. Express 5 tens and 1, or fifty-one. 7. Write the numbers from fifty-one to fifty-nine. 8. Express 6 tens, or sixty : 60. 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 0 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. SLATE EXERCISES. Thirty-two Eighty Forty-nine Forty-seven Twenty-nine Thirty-eight 78 55 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 X 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 X1=6. 8. Seven boys each own a sled. How many sleds do they all own? 7 X1=? 9. Each of 8 boys has a pair of skates. How many pairs do they all own? 8 x1=? 10. Nine men each own 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 ? 3 x1=? 13. If you pay 1 cent for an apple, how many cents will you pay for 7 apples ? 14. If each pupil, in a class of 9 pupils, answers 1 question, how many questions will they all answer? an LESSON XXXIII. 1. A horse has 2 eyes. How many eyes have 2 horses? How many eyes are 2 times 2 eyes ? 2. A horse has 2 ears. How many ears have 3 horses? 3 X 2=? - 3. If i rocking-horse costs 2 dollars, what will 4 rocking-horses cost? 4 X 2=? 4. If a boy goes to school only 2 days each week, how many days will he attend in 5 weeks? 5. A boy read 2 pages of his book each day for 6 days. How many pages did he read in that time? - 6. If a boy earn 2 dollars a week, how many dollars will he earn in 7 weeks? 7 X 2=? 7. What will 8 sheets of blotting-paper cost at 2 cents a sheet? 8 X 2=? 8. What will 9 pairs of shoes cost at 2 dollars a pair ? 9 X 2=? 9. How many cents are there in 10 two-cent pieces ? 10. If it requires 2 yards of cloth to make a child's cloak, how many yards will it require to make 8 such cloaks? A short process of adding equal numbers is called Multiplication. 11. Form the multiplication tables of ones and twos. TABLES. 1x1=1 6X1= 6 2 x1=2 7 X1= 7 3 x1=3 8 X 1= 8 4x1=4 9X1= 9 5X1=5 10 x1=10 1 X 2= 2 6 X 2=12 2 X 2 4 7 X 2=14 3 X 2= 6 8 X 2=16 4 X 2 8 9 X 2=-18 5 X 210 10 X 2=20 LESSON XXXIV. 1. If a boy walks 3 miles in 1 hour, how many miles will he walk in 2 hours ? 2 X 3=? 2. What will 3 engravings cost at 3 dollars each ? -3. Martha put 3 tulip bulbs in each of 4 pots. How many bulbs did she plant? 4X3=? 4. Each of 5 boys threw 3 stones into the water. How many stones did they all throw ? 5 X 3=? - 5. If the pupils learn 3 songs in a month, how many songs will they learn in 6 months ? 6. If there are 3 cherries in 1 bunch, how many cherries are there in 7 such bunches? 7. If there are 8 boats, and 3 boys in each boat, how many boys are there in the boats ? 8. If there are 3 globes on 1 chandelier, how many globes are there on 9 such chandeliers ? |