30 cents are how many 15-cents? 15 cents are what part of 30 cents? 38. REVIEW. At 10 cents each, how many pineapples can you get for 30 cents ? Mary wishes to plant some pinks in a triangular garden bed. How many plants will she use if she plants 10 on each of the 3 sides? (Picture.) How many 5-cent pieces in 30 cents? (Picture.) A church is lighted by 5 lamps of 6 burners each. How many burners in all ? George planted some hyacinth bulbs in 5 boxes, planting 6 bulbs in each box. How many did he plant in all? A boy walks 10 squares in 30 minutes. At that rate, how long is he in walking one square? I bought 4 verbenas for 30 cents. What did each plant cost, if they are of equal value? Make problems for the following forms: 40. COMPARISON OF HALVES, FOURTHS, AND EIGHTHS. A whole melon can be divided into how many halves? How many fourths? Fold a paper square into two equal triangles. One of the triangles is what part of the whole square? Fold the same square so as to make four equal triangles. What part of the whole square is one of the small triangles? is equal to how many fourths? Fold your square so as to make eight equal triangles. One of the triangles is what part of the whole square? Two of the triangles are what part of the whole ? If three of the triangles were cut out of the square, what part of the whole would be left? of the square is equal to how many eighths? is equal to how many? are equal to how many eighths? of a whole cheese are equal to how many eighths of the cheese? are how many eighths? 1 + 8 = ? + are how many eighths? 41. From your folded squares find the answers to the following questions: 42. Draw upon your slate a square; divide it into eight equal oblongs, and find from the slate the answers to the following questions: Mary made a cake for tea; half of it was eaten, and the remainder was divided equally among four visitors. What part of the whole cake did each visitor receive? George had a ball of twine for his kite; he used half of it, and divided the remainder equally between two other boys. What part of the whole ball of twine did each boy get? 43. Take two equal squares of paper. Fold each into four equal smaller squares; call them square crackers, and give them to four children, so that they shall have equal shares. What part of the two large squares does each child receive? What part of one square? NOTE TO THE TEACHER. Distribute all the parts of one square first. To how many children did you give the two squares? One of the four equal parts of anything is called what? Place the small squares together again so as to form the two large squares. of 2 squares is what part of one of the squares? of 2 pies ? of 2 apples = ? of 2 melons = ? Divide 2 sticks of candy equally among four boys. What part of the whole will each boy receive? What part of one stick is that? 44. Take three equal souares of paper. Divide these equally among four children. (Fold each into four smaller squares.) What part of the three large squares does each child receive? What part of one square? Into how many equal parts did you divide the three squares? One of these equal parts is called what? Place the small squares together again so as to form the three large squares you had at first. 3 squares is what part of one square ? of Find what part of 3 tooth-picks is of one whole tooth-pick. Divide 3 oranges equally among 4 boys. What part of the 3 will each receive? of 3 is what part of 1? Plant 3 potatoes in 4 hills. If you divide them equally, what part of 1 potato will be in each hill? (Make a picture to show this.) Give 3 bananas to 4 girls, dividing them equally. How many will each girl receive? |