4. Write the figures for these numbers: a. Seven hundred thousand, one hundred ten. b. One million, two hundred nineteen thousand, seven. c. Nine million, five hundred twenty thousand, two hundred twenty. d. Twenty-five million, four hundred eighty-six thousand, three hundred fifteen. e. Five hundred fifty-five million, six hundred thirtyfour-thousand, twenty-two. f. Three hundred ninety-one million, twenty thousand, one hundred twenty-eight. 5. Count by hundreds from 1000 to 2000 and back. 6. Count by hundreds from 99,000 to 100,000 and back. 7. Count by thousands from 101,000 to 121,000. 8. Count by ten-thousands from 900,000 to 1,000,000. 9. In the number 801,007,010 are how many units? tens? hundreds? thousands? ten-thousands? hundredthousands? millions? hundred-millions? 1. Read this table forward from 1 and backward from 100, emphasizing the numbers printed in black face figures. 3. Answer: 32÷ 4=? 64÷8=? 88 ÷ 11 =? 48 ÷ 6 = ? 96÷12= 80÷10 ? 72÷9=? 56÷ 7 =? 40 ÷ 5 =? 6. What is the highest number that multiplied by 12 gives a number less than 100? Notice that 2 × 12 = ? 3 x 12 ? 4 x 12? 5 x 12 ? 6x12=? 7x12 = ? = 8 × 12 = ? Add another 12 to 8 × 12. 9 × 12 = ? MUSIC FRACTIONS In music we have equal parts or fractions of time. A whole note is the musical unit of time. The space between the two vertical bars in this drawing is one meas 64 ure. One whole note would take all the time in this measure. Two half notes would take all the time. Two quarter notes and one half note would also take all the time. Hexagon MANY-SIDED FIGURES The bees always make their cells with six sides of equal length. A figure with six equal sides is called a hexagon. We can find its center by drawing lines to opposite angles. Where the lines cross is the center of the hexagon. These lines divide the hexagon into six equal parts. Sixths Each one of these equal parts is a triangle. If we divide each side of the hexagon into two equal parts, and draw a line inside of each triangle from the center of the hexagon to the middle point of each side, the hexagon will have twelve equal parts and twelve triangles. 5. Draw hexagons on the blackboard. 6. Cut hexagons out of paper or cardboard and show EQUALITY OF FRACTIONS 3. 6 Then = ? 12 12 13 of 24 = ? ? of 24 ? 8 of 24 ? of 24 = ? = equals any fraction of which the number of parts taken is of the whole number of are ten equal parts, then, 142 equals any fraction of which the number of equal parts is three times the number of equal parts taken. The numerator of a fraction, written above the line shows the number of parts taken, and the denominator, written below the line, shows the number of equal parts. REVIEW 10. Point off into periods and read: 1000000 1217633 3939390 4000004 38714672 44699216 355466219 716219622 556623288 700015271 |