Name:    Lesson 6.3: Exploring Uses of Integer Division

1.

The school’s swim team coach wants to determine who is the most improved member of the swim team. He records the time it takes for each swimmer to swim one lap each day for one week.

 Steven’s Swim Times Day 1 2 3 4 5 6 7 Change in time 47 s 23 s 11 s 12 s 19 s 27 s 7 s

 Brenda’s Swim Times Day 1 2 3 4 5 6 7 Change in time -22 s +15 s -11 s -9 s +5 s -16 s +3 s

 Alex’s Swim Times Day 1 2 3 4 5 6 7 Change in time +12 s +8 s -14 s +6 s -21 s -7 s -5 s

 Marian’s Swim Times Day 1 2 3 4 5 6 7 Change in time +32 s +10 s -15 s -19 s +6 s -14 s -7 s

Determine Steven’s average daily time changes.
 a. 2 s per day b. 2 s per day c. 14 s per day d. 14 s per day

2.

Determine Brenda’s average daily time changes.
 a. 5 s per day b. 18 s per day c. 5 s per day d. 6 s per day

3.

Determine Alex’s average daily time changes.
 a. 26 s per day b. 4 s per day c. 3 s per day d. 3 s per day

4.

Determine Marian’s average daily time changes.
 a. 1 s per day b. 7 s per day c. 1 s per day d. 13 s per day

5.

Who’s average daily time improved the most?
 a. Steven b. Brenda c. Alex d. Marian

6.

Mai Li is following the daily changes in value of different stocks on the stock market over the course of 4 weeks.

 Stock A Week 1 2 3 4 Change in value 25¢ 18 ¢ 21 ¢ 2¢

 Stock B Week 1 2 3 4 Change in value 17¢ 12 ¢ 15 ¢ 6¢

 Stock C Week 1 2 3 4 Change in value 5¢ 10 ¢ 3 ¢ 12¢

 Stock D Week 1 2 3 4 Change in value 16¢ 24¢ 8¢ 16¢

What is the average weekly change of Stock A?
 a. 4¢ per week c. 12¢ per week b. 3¢ per week d. 6¢ per week

7.

What is the average weekly change of Stock B?
 a. 5¢ per week c. 7¢ per week b. 20¢ per week d. 16¢ per week

8.

What is the average weekly change of Stock C?
 a. 4¢ per week b. 4¢ per week c. 1¢ per week d. 9¢ per week

9.

What is the average weekly change of Stock D?
 a. 7¢ per week b. 2¢ per week c. 1¢ per week d. 4¢ per week

10.

Which stock had the least average weekly change?
 a. Stock A b. Stock B c. Stock C d. Stock D