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
mc001-1.jpg47 s
mc001-2.jpg23 s
mc001-3.jpg11 s
mc001-4.jpg12 s
mc001-5.jpg19 s
mc001-6.jpg27 s
mc001-7.jpg7 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.
mc001-8.jpg2 s per day
c.
mc001-9.jpg14 s per day
d.
14 s per day
 

 2. 
Determine Brenda’s average daily time changes.
a.
mc002-1.jpg5 s per day
b.
mc002-2.jpg18 s per day
c.
5 s per day
d.
6 s per day
 

 3. 
Determine Alex’s average daily time changes.
a.
mc003-1.jpg26 s per day
b.
4 s per day
c.
3 s per day
d.
mc003-2.jpg3 s per day
 

 4. 
Determine Marian’s average daily time changes.
a.
1 s per day
b.
mc004-1.jpg7 s per day
c.
mc004-2.jpg1 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
mc006-1.jpg25¢
mc006-2.jpg18 ¢
mc006-3.jpg21 ¢
mc006-4.jpg2¢

Stock B
Week
1
2
3
4
Change in value
mc006-5.jpg17¢
mc006-6.jpg12 ¢
mc006-7.jpg15 ¢
mc006-8.jpg6¢

Stock C
Week
1
2
3
4
Change in value
mc006-9.jpg5¢
mc006-10.jpg10 ¢
mc006-11.jpg3 ¢
mc006-12.jpg12¢

Stock D
Week
1
2
3
4
Change in value
mc006-13.jpg16¢
mc006-14.jpg24¢
mc006-15.jpg8¢
mc006-16.jpg16¢

What is the average weekly change of Stock A?
a.
4¢ per week
c.
mc006-18.jpg12¢ per week
b.
mc006-17.jpg3¢ per week
d.
mc006-19.jpg6¢ per week
 

 7. 
What is the average weekly change of Stock B?
a.
mc007-1.jpg5¢ per week
c.
mc007-3.jpg7¢ per week
b.
mc007-2.jpg20¢ per week
d.
mc007-4.jpg16¢ per week
 

 8. 
What is the average weekly change of Stock C?
a.
mc008-1.jpg4¢ per week
b.
4¢ per week
c.
mc008-2.jpg1¢ per week
d.
mc008-3.jpg9¢ per week
 

 9. 
What is the average weekly change of Stock D?
a.
7¢ per week
b.
mc009-1.jpg2¢ per week
c.
mc009-2.jpg1¢ per week
d.
mc009-3.jpg4¢ per week
 

 10. 
Which stock had the least average weekly change?
a.
Stock A
b.
Stock B
c.
Stock C
d.
Stock D
 



 
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