MULTIPLICATION OF DOLLARS AND CENTS 1. Multiply $1.25 by 3. $ 1.25 $3.75 375¢ the dollar sign before the 2. Multiply 70¢ by 3. 70¢ 3 210 = $2.10. Multiply: In multiplying dollars and cents, place the decimal point in the product directly under the decimal point in the multiplicand. Write number of dollars. 3. Multiply $.75 by 4. 6. How much will 3 baskets of peaches cost at 65¢ a basket? 7. A messenger boy delivers 4 messages at 45¢ each. How much does he earn for his company? 8. If Mary earns $4.75 a week in a department store, find her wages for 4 weeks. 9. At 1.50 apiece, find the cost of 6 tickets for a concert. At this sale how much must I pay for each of the following purchases? 1. 8 dozen eggs. 5. 6 crates of tomatoes. 2. 7 pounds of cheese. 6. 2 barrels of flour. 7. 9 pounds of butter. 8. 1 pounds of butter. 3. 4 barrels of apples. 4. 12 pounds of coffee. 9. 4 dozen eggs and 2 pounds of butter. 10. 1 barrel of flour and 3 crates of tomatoes. 11. 2 dozen oranges and 2 dozen eggs. Multiply each of the following by 7; by 10; by 24; 16. Find the cost of 2 dozen chairs at $2.75 each. 17. It requires 40 yards of carpet for a certain room. How much will it cost at $2.98 a yard? PRACTICAL PROBLEMS 1. How many seats are there on each side of the car? 2. If 8 seats are vacant on each side, how many are occupied ? 3. The conductor collected 75 fares on the first trip and 87 fares on the return trip. How many fares did he collect? 4. The fare is 5 cents. How much money did he collect on both trips? 5. A lady paid for herself and 5 children. She gave the conductor a How much change should half dollar. she receive? 6. Each seat will accommodate two persons. How many persons can be seated in the car? 7. The conductor earns $2.50 in a day. How much does he earn in 5 days? 8. The motorman is paid $2.75 a day. How much does he earn in 5 days? How much more does he earn in a day than the conductor? 9. The line is 8 miles long. How far does a car run in making 5 round trips? 10. On one trip each seat was occupied, and 5 persons had to stand. Find the amount of the fares for the trip. PRACTICAL PROBLEMS 1. Find the cost of 5 yards of lace at $.75 a yard. 2. Four boys deposited in the school bank as follows: $4.25, $ 6.93, $ 4.34, and $6.05. What was the entire deposit? 3. Julia went to the store with a twenty-dollar bill. She paid 75 cents a yard for 6 yards of oilcloth. How much had she left? 4. A box contains 360 oranges. If of them are bad, how many good ones are there in the box? 5. At 36 cents a dozen, how much will 5 dozen oranges cost? 6. At 24 cents a dozen, how much will 6 dozen oranges cost? How much change should a lady receive after paying for the oranges with a two-dollar bill? 7. Make a problem with: $8.25, $6.32, $6.56, and $5. 8. John paid a bill of $7.32 and had $6.54 remaining. How much had he at first? 9. If there are 28 lines on each page of a book, how many lines are there on 6 pages? 10. A dealer bought 6 sets of furniturė at $ 104 each. How much did they cost? 11. He also bought 5 sets at $75 each. Find the cost. 12. Make problems with: Books at $3.75 each. HAM. STAND. AR. I-14 Clocks at $9.50 each. Tables at $14.50 each. MULTIPLICATION OF CONCRETE NUMBERS Numbers that name objects are concrete; as, 6 apples, 3 boys, 5 yards. Numbers that do not name objects are abstract; as, 7, 9, 3. 7,9, 1. Which of the following numbers are abstract? Which are concrete? 8; 6 eggs; $4; 5; 25; 4 feet. 2. Name the multiplier and the multiplicand: The product must have the same name as the multiplicand. The multiplier is always an abstract number. When two numbers are multiplied, the number in the product remains the same in whatever order the numbers are taken; thus, 7 × 12 = 12 × 7. 3. How much do I earn in 125 days at $3 per day? When the multiplier has more figures than the multiplicand, the product may be found as at the left, but the analysis should be given thus: 125 3 375 |