Reduce the fractions to fractions having the least common denominator. Write the sum of the new numerators over the common denominator. To subtract fractions having different denominators: Reduce the fractions to fractions having the least common denominator. Write the difference of the new numerators over the common denominator. MULTIPLICATION 445. Oral Questions. 1. How much money is of 50 cents? I. 2. If each boy has quart of chestnuts, how many quarts do 4 boys have? 8 boys? 12 boys? 13 boys? 3. If a man work for $1 a day, how much will he earn in 2 days? In 3 days? In 4 days? 4. What is of 3? of 6?×9? ×12? (After a fraction the sign (×) is read of.) 5. What part of a dollar isofof a dollar? Multiplying the numerator multiplies the fraction. 1. Find the cost of 12 bushels of corn at 60 cents a bushel. 2. If a bushel of oats weighs 32 pounds, what is the weight of 61 bushels? 3. At the rate of 33 miles per hour, how far will a man walk in 4 hours? 4. When sugar sells at 6 cents per pound, what must be paid for 371⁄2 pounds? 5. A man bought 12 tons of hay at $183 per ton; what did he pay? 6. If a man step 23 feet, how far will he walk in 150 steps? In all work in fractions, results should be given in the lowest terms. 451. To multiply fractions: Reduce each whole number or mixed number to the form of an improper fraction. Multiply the numerators together for a new numer ator. Multiply the denominators together for a new denominator. 5. What is half of 10? half of $10.50? $10.50÷2? 101÷2? |