8. How many tens in 210? In 220? In 340? In 450? 9. How many units in 225? How many tens and units? How many hundreds, tens, and units? 10. 10 units = 1 ten; 10 tens = 1 hundred. 11. When no number is named for any place, fill the place with a cipher; thus, seven hundred six is 7 hundred, no tens, and 6 units, and is written 706. 12. Nine hundred eighty is 9 hundred, 8 tens, no units, and is written 980. 13. How many units make 1 ten? 1 hundred ? 14. How many units are 7 tens and 9 units? 15. How many tens are 4 tens and 5 tens? 16. How many hundreds are 3 hundreds and 4 hundreds ? How many tens? How many units? Express in one number, by figures, each of the following: 17. 4 tens, 6 units, and 5 hundreds. 18. 5 units, 8 hundreds, and 4 tens. Hund. Tens. Units. 54 6 845 658 076 504 790 800 Write the following numbers in columns, placing units under ulits, tens under tens, and hundreds under hundreds: 24. 366, 48, 104, 261, 407, 39, and 7. 25. 59, 116, 204, 16, 320, 40, and 10. 26. 730, 126, 75, 109, 18, 638, 49, 500, and 9. 27. 84, 907, 17, 300, 250, 199, 29, and 403. 28. 106, 480, 36, 500, 267, 39, and 50. 3. 1. In the picture there are 100 small blocks in the top row or layer. How many hundred blocks are there in 2 rows or layers ? 2. How many hundred blocks in 3 rows? In 4 rows? 3. How many rows of blocks are represented? How many blocks in a row? How many blocks in the cube? 4. 999 and 1 more equal one thousand, 1000. Two thousand. Three thousand. Four thousand. Five thousand. Six thousand. Seven thousand. Nine thousand. 7. In any number expressed by four figures, the figure at the right is units, the next is tens, the next hundreds, and the fourth figure from the right is thousands. 8. What do the figures 2345 represent ? Ans. 2 thousands 3 hundreds 4 tens 5 units, read, two thousand three hundred forty-five. 9. What do the figures 1040 represent? Ans. 1 thousand no hundreds 4 tens no units; read, one thousand forty. 10. In the same manner, read the following: Thous. Hund. Units. Write in figures the following numbers: 11. Three thousand five hundred seven. 12. One thousand two hundred ten. 13. Two thousand one hundred three. 14. Four thousand thirty. 15. Five thousand forty-six. 16. Seven hundred eight. 17. Nine thousand twelve. 3507 1210 2103 19. Five hundred ninety. 20. Seven thousand seven. 18. Eight thousand forty-two. 23. Twenty-five hundred. 24. One thousand three hundred and forty-seven. 25. Five thousand six hundred and seventeen. 26. What is the greatest number that can be expressed by four figures? 27. 9999 and 1 more equal ten thousand, 10000. 28. How do we express ten thousand by figures? 29. In like manner, represent by figures: 4. 1. The places in a number are called orders of units; thus, 324 represents 4 units of the first order, 2 units of the second order, or 2 tens, and 3 units of the third order, or 3 hundreds. 2. Ten units of any order in a number make one unit of the next higher order. 3. A period is a group of three orders of units, counting from right to left. 4. The figures in the first period on the right represents units, in the second period thousands, in the third period millions, as shown in the following 5. Beginning at the right, the order of simple units occupies the first place; tens, the second place; hundreds, the third; thousands, the fourth; tens of thousands, the fifth; hundreds of thousands, the sixth, etc.; a unit in each place towards the left being ten times greater than the one before it on the right. 6. Each period is read like a number of three figures, giving it the name of the period; thus, the first number above is read, 127 million 364 thousand 549. 5. To assist the pupil in learning to write and to read numbers readily, use the following form: 1. The first number is read, 3 hundred 7. 2. The second is read, 2 thousand 4 hundred 60. 3. The third is read, 14 thousand 84. 4. The fourth is read, 205 thousand 6 hundred 2. 5. The fifth is read, 2 million 40 thousand Mill. Thou. Units. CHECHI 307 2 460 14 084 205602 2040700 hundred. When proficiency in smaller numbers is attained, this exercise may be extended to higher periods. Copy, point off into periods, and read the following: 6. 3472; 17043; 20304. 600317; 108300. 7. 500037; 2405037; 910307; 76301; 30406. 8. Write the preceding numbers in each line, in columns, placing units under units, tens under tens, etc. Express the following in figures: 9. Sixty thousand six hundred eight. 10. Seven hundred twenty thousand fifty-six. 11. Two hundred forty-nine thousand five hundred. 12. One million ninety-six thousand two hundred ten. 13. Two million three hundred twenty-five thousand. 14. Seven hundred fifty million six thousand nine hundred 6. Express in figures, and read the following numbers: |