10. I bought 3 pounds of raisins for 28 cents. How much is that a pound? 11. Lemons are selling at 20 cents a dozen. What is of a dozen worth? 12. Add of 27 to of 28. 3 x 7 + 6 = how many 9's. One fifth of 25+ 6 = of what? 3 × 9+ (?) 30. 6 x 5 ÷ 10 is the half of = what? 3 times one fifth of 30 + 3 = ? 50. WRITING NUMBERS. FROM THIRTY TO ONE HUNDRED. Three Tens One One 400 | 400 || 200 ||| 000|| Thirty-one Thirty-two Thirty-three Thirty-four Thirty-five Three Tens Eight Ones 0001 Thirty-eight. Thirty-nine Find the counters and write the figures for three tens and one one; three tens and two ones. Add one each time, and represent by figures through three tens and nine. Three tens and two ones are how many ones? Three tens and five ones are how many ones? Three tens and nine ones are how many ones? Read these numbers: 31, 32, 33, 34, 35, 36, 37, 38, 39. 51. Add 1 to three tens and 9 ones. How many tens are there? Write the number in figures. 40 Four Tens Forty nine ones. Four tens are how many ones? Count by ones, beginning with forty, until you have four tens and Read these numbers: 40, 41, 42, 43, 44, 45, 46, 47, 48, 49. Tell the number of tens and ones each repre The right-hand figure of each of these numbers expresses what? When a number is expressed by two figures, the right-hand figure always stands for ones, and the left-hand figure for tens. 53. With your counters in hand, add 1 to 4 tens and 9 ones. How many tens and ones have you? Write the figures for this number. 5 tens are how many ones? Count by ones, beginning with fifty, until you have five tens and nine ones. Write each number as you count. Read: 50, 51, 52, 53, 54, 55, 56, 57, 58, 59. Write the tens and ones each represents. Fifty 56 is how many tens and ones? 56 is how many ones? Show with your counters the number of tens and ones in 58. Show the number of ones. 54. Find six tens with your sticks. Express six tens in figures. Begin with sixty, and count by ones through sixty-nine. Express each number in figures as you count. 60 Six Tens 000000 Sixty Read these numbers as tens and ones: 60, 61, 62, 63, 64, 65, 66, 67, 68, 69. How many ones in six tens and four ones? In six tens and nine ones? Six tens are how many more than five tens? 55. Find seven tens, and express this number in figures. 70 Seven Tens 1000111 Seventy as you count. 77, 78, 79 Count by ones, beginning with seventy, until you have seven tens and nine ones. Express each number in figures Read: 70, 71, 72, 73, 74, 75, 76, Write the last column in words. Write in figures a number which is ten more than 30; one that is ten more than 50; ten more than 60; ten less than 70. Sixty is how many more than 50? 20 is how many more than 10? 20 is how many less than 30? 56. Add one to 7 tens and 9 ones. How many 80 Eight Tens 81, 82, 83, 84, 85, 86, 87, 88, 89. Eighty How many tens and ones does the third number from the left represent? Lay down the counters for each of these numbers: 84, 88, 81, 87, and 89. How many ones in eighty-nine? How many tens and ones in 89 ones? 90 57. Add 1 to eight tens and 9 ones. How many tens are there? Write the number in figures. Count by ones, and write the numbers through nine tens and nine ones. 90, 91, 92, 93, 94, 95, 96, 97, 98, 99. Nine Tens Ninety Tell how many tens and ones each represents. Ninety ones are how many tens and ones. 97 ones are how many tens and ones? How many ones in 9 tens and 3 ones? 9 tens and 5 ones? 9 tens and 8 ones? 9 tens and 8 ones? 8 tens and 6 ones? 7 tens and 4 ones? 5 tens and 9 ones? 99 is the largest number which can be expressed by two figures. |