CONTENTS. I. REVIEW OF NUMBER REPRESENTATION TO 30 II. NUMBERS FROM 20 TO 30.—PARTITION, DIVISION, AND - III. NUMBERS FROM 30 TO 40 (treatment same as in Chap. II.) I. READING AND WRITING NUMBERS. II. UNITED STATES MONEY. DRILLS AND REVIEWS . 13-64 65-99 100-122 123-144 161-172 173-198 ||||||| |||||||| |||||||| |||||||| Place your bundles of counters upon your slates, or make drawings of these bundles of sticks, and write under each the figure which stands for the tens, and the figure which stands for ones. 2. Read the number which you have written under each group. In the first group (one ten and one one) the figures are alike; do they mean the same thing? What does the figure on the left represent? Which is more, one one or one ten? Which is of more value, a one-cent piece or a ten-cent piece? How many ones make one ten? One one is what part of one ten? 3. Begin with 1, and write in a column the figures which stand for the numbers, through nineteen. To the left of each write the word which stands for the number. In the number ten, which figure stands for no ones? Words: naught, one, two, three, four, five, six, seven, eight, nine. 1 2 3 4 5 6 7 8 4. One ten and two ones are how many ones? Twelve ones are how many tens and ones? Eighteen ones are how many tens and ones? 16 ones are how many tens and ones? 1 ten and 8 ones are how many ones? 5. Add one more to your nineteen sticks. How many tens have you? How many ones besides the two tens? Untie the bundles; how many ones have you? Two Tens H Twenty Tie the two tens tightly together, place them on your slate, and write under this bundle the figure which stands for the two tens. To the right of the 2 place the figure which shows that there are no ones. Read the number (20 Twenty Two tens and no ones are twenty ones. Read the number you have written, first as tens and ones. Untie your bundles. How many ones? Read the whole number of ones. 6. Take one more stick, and you have how many tens and ones? Write the figure which stands for the two tens; the figure which stands for the one one. Untie the bundles of sticks. How many ones have you? Two Tens HI Twenty-one Two tens and one one are twenty-one. 7. Read the number which you have written. Take one more counter; how many tens and ones have you? Write the figure which stands for the tens; the figure which stands for the ones. Twenty-two Two tens and two are twenty-two. Write the figures for this number. Write the figures for two tens and three ones. Write the figures for two tens and four ones. 8. Draw these groups of tens and ones, and write under each group the figures which stand for tens and ones. Two tens and five ones are how many ones? |