C7a
Practice - Simple Word Problems
TRY TO ANSWER IN TWO AND A HALF MINUTES.
QUESTIONS
QUESTIONS
1. Sam rented a car at 10 am on Wednesday and returned it at 7 pm on Thursday. He had to pay for two full days. His bill was $74. What was the daily rate for the car? (No calculator supplied)
2. You went to a movie which cost six dollars. After the movie you have $3.50 in your pocket. How much did you have before you went to the movie? (No calculator supplied)
3. You can type 90 words per minute on your computer. How many words can you type in an hour, assuming no breaks or fatigue? (No calculator supplied)
4. An 8-1/2 ounce bag of chips says there are 9 chips per serving and that there are "about 8 servings" in the bag. About how many chips are in the bag? (No calculator supplied)
5. You work 10 hours on Monday and were paid $9/hour for the first eight hours and double-time ($18/hour) for the rest. How much did you earn? (No calculator supplied)
6. You have 20 pounds of sugar. You use 4.5 pounds to make one recipe. You use 6.7 pounds to make a different recipe. After making each of these recipes one time, how much sugar do you have left? (No calculator supplied)
7. You need 8 yards of fabric to cover a sofa. Each yard costs $11. How many yards do you need to cover three sofas. How much will the fabric cost?
8. Your family uses 350 gallons of water each week. Five gallons a day goes through your water filter. The filter can process 800 gallons before it needs replacing. How many weeks will your water filter last?
9. You make cookies for a bake sale. Each batch requires 1 cup of flour. You have a 5-pound bag of flour that contains 14 cups. How many batches of cookies can you make with the bag of flour?
10. You can buy health insurance for $2500/year. Each of the four members of your family are covered by the plan. Each of you has $400 of medical expenses. If the insurance pays all of these expenses, should you buy the insurance?
11. The temperature drops from a high of 46 degrees to a low of - 8 degrees. How far did it drop?
12. You want to build a 22-foot fence with boards which are 5-1/2 inches wide. How many boards will you need?
13. Four gallons of gas cost $18.36. What is the price per gallon?
ANSWERS
1. $74/2 = $37.
2. $3.50 + $6.00 = $9.50.
3. 90 words/minute times 60 minutes = 90 times 60 = 5400 words.
4. 9 chips/serving times 8 servings = 9 times 8 = 72. Notice that the 8-1/2 ounces is not needed.
5. 10 - 8 = 2. Pay = (8 hours times $9/hour) plus (2 hours times $18/hour) = $72 + $36 = $108.
6. 20.0 - 4.5 - 6.7 = 8.8 pounds.
7. If it takes 8 yards to cover one sofa, it will take 8 x 3 = 24 yards to cover three sofas. The cost would be 24 yards times $11/yard = $264.
8. Five gallons a day is 35 gallons a week. 800/35 = 22.85, or about 23 weeks. Notice that your total water usage is not relevant.
9. You need one cup per batch and the bag contains 15 cups, so you can make 15 batches. None of the other information is used.
10. No. Your covered medical expenses would be 4 x $400 = $1600. This is less than the $2500 cost of the insurance.
11. You subtract the low temperature from the high temperature: 46 - (-8) = 46 + 8 = 56 degrees.
12. 22 feet equals 264 inches. 264 inches divided by 5.5 inches equals 48, so you will need 48 boards.
13. $18.36 / 4 = $4.59 per gallon.
CALCULATOR STEPS
In addition to the calculator keys on preceding pages, this page uses the (-) key, for entry of a negative number.
1. Press on and clear. Key in 74. Press ÷. Key in 2. Press enter. The screen should show "37".
2. Press on and clear. Key in 6. Press + . Key in 3.5. Press enter. The screen should show "9.5".
3. Press on and clear. Key in 90. Press x . Key in 60. Press enter. The screen should show "5400".
4. Press on and clear. Key in 9. Press x . Key in 8. Press enter. The screen should show "72".
5. Press on and clear. Press ( . Key in 8. Press x . Key in 9. Press ) . Press + . Press ( . Press ( . Key in 10. Press - . Key in 8. Press ) . Press x . Key in 18. Press ) . Press enter. The screen should show "108".
6. Press on and clear. Key in 20. Press - . Key in 4.5. Press - . Key in 6.7. Press enter. The screen should show "8.8".
7. Press on and clear. a) Key in 8. Press x . Key in 3. Press enter. The screen should show "24". b) Press x . Key in 11. Press enter. The screen should show 264.
8. Press on and clear. Key in 800. Press ÷. Press ( . Key in 5. Press x . Key in 7. Press ) . Press enter. The screen should show "22.85".
9. Press on and clear. Key in 5. Press ÷. Key in 1. Press enter. The screen should read "5".
10. Press on and clear. Key in 2500. Press - . Key in 4. Press x . Key in 400. Press enter. The screen should show "900".
11. Press on and clear. Key in 46. Press - . Press (-) . Key in 8. Press enter. The screen should show "54".
12. Press on and clear. Press ( . Key in 22. Press x . Key in 12. Press ) . Press ÷ . Key in 5.5. Press enter. The screen should show "48".
13. Press on and clear. Key in 18.36. Press ÷ . Key in 4. Press enter. The screen should show "4.59".