5 Minute Check
Complete in your notes.
1. 424 kilometers in 8 hours as a unit rate.
2. $60 for 12 months as a unit rate.
3. You have 40 cards you want to divide into two
groups so the ratio is 3:2. How many is in each
group?
4. After working for 24 hours, Zoe made $234.
Predict how much she would make after 10
hours of work.
5 Minute Check
Complete in your notes.
1. 424 kilometers in 8 hours
5 Minute Check
Complete in your notes.
1. 424 kilometers in 8 hours
424 𝑘𝑚
8 ℎ𝑟𝑠
=
𝑥 𝑘𝑚
1 ℎ𝑟
424 x 1 ÷ 8 = 53
𝟓𝟑 𝒌𝒊𝒍𝒐𝒎𝒕𝒆𝒓𝒔
𝟏 𝒉𝒓
5 Minute Check
Complete in your notes.
2. $60 for 12 months
5 Minute Check
Complete in your notes.
2. $60 for 12 months
5
$60
12 𝑚𝑜𝑛𝑡ℎ𝑠
1
=
$𝟓
𝟏 𝒎𝒐𝒏𝒕𝒉
$𝑥
1 𝑚𝑜𝑛𝑡ℎ
5 Minute Check
Complete in your notes.
3. You have 40 cards you want to divide into two
groups so the ratio is 3:2. How many is in each
group?
5 Minute Check
Complete in your notes.
3. You have 40 cards you want to divide into two
groups so the ratio is 3:2. How many is in each
group?
Method 1
40 cards
8 cards
8 cards
Group A
24:16
OR
8 cards
8 cards
8 cards
Group B
5 Minute Check
Complete in your notes.
3. You have 40 cards you want to divide into two
groups so the ratio is 3:2. How many is in each
group?
Method 2
3
6
9
12
15
18
21
24
2
4
6
8
10
12
14
16
5
10
15
20
25
30
35
40
24:16 or for you graphically challenged…..
5 Minute Check
Complete in your notes.
3. You have 40 cards you want to divide into two
groups so the ratio is 3:2. How many is in each
group?
Because we have a 3:2 ratio, there will be 5 sections.
One group will have 3 sections and one group will
have 2 sections. If there are 40 cards divided into 5
sections, there will be 8 cards in each section. That
mean the groups will have 3 x 8: 2 x 8, or 24:16.
5 Minute Check
Complete in your notes.
4. After working for 24 hours, Zoe made $234.
Predict how much she would make after 10
hours of work.
5 Minute Check
Complete in your notes.
4. After working for 24 hours, Zoe made $234.
Predict how much she would make after 10
hours of work.
$234
24 ℎ𝑜𝑢𝑟𝑠
=
$?
1 ℎ𝑟
234 x 1 ÷ 24 = $9.75
$9.75 x 10 = $97.50
Percentages
Friday, Dec 11
Chapter 2
Review
Chapter 2 Review
Objective: To understand how to convert
between decimals, fraction and percents; and
to find the percent or fraction of a number.
Chapter 2 Review
1. Express 0.82 as a percent.
Chapter 2 Review
1. Express 0.82 as a percent.
0.82 x 100 = 82%
OR
0.82 = 82%
Chapter 2 Review
2. What is 20% of 25.
Chapter 2 Review
2. What is 20% of 25.
÷4
20
100
=
?
25
÷4
20 ÷ 4 = 5
Chapter 2 Review
2. What is 20% of 25.
20% = 0.20
25
x.2
5.0
Chapter 2 Review
3. 14 is 35% of what number?
Chapter 2 Review
3. 14 is 35% of what number?
14
?
=
5x7
35
100
5 x 20
14 x 20 ÷ 7 = 40
Check
.35 x 40 = 14
40
x .35
200
1200
14.00
OR……
Chapter 2 Review
3. 14 is 35% of what number?
what number x .35 = 14, then
14 ÷ .35 = what number
0040
35)1400.
-140
0
Chapter 2 Review
4. Express 75% as a fraction in simplest form.
Chapter 2 Review
4. Express 75% as a fraction in simplest form.
75
75% = 100
= 34
Chapter 2 Review
5. Express 55.5% as a fraction in simplest form.
Chapter 2 Review
5. Express 55.5% as a fraction in simplest form.
10
555
5
111
55.5% = 55.5
X
=
÷
=
100
10
1000
5
200
Chapter 2 Review
5
6. What is 25
as a decimal?
Chapter 2 Review
5
6. What is 25
as a decimal?
0.2
25)5.0
-50
0
0.2
OR
Chapter 2 Review
5
6. What is 25
as a decimal?
5
25
=
?
100
x4
20
100
= twenty hundredths = 0.20
Chapter 2 Review
7. At Medina Middle School, 2% of the students ride
bikes to school. If 950 students attend Medina
Middle School, how many students ride a bike to
school?
Chapter 2 Review
7. At Medina Middle School, 2% of the students ride
bikes to school. If 950 students attend Medina
Middle School, how many students ride a bike to
school?
?
950
=
2
100
950 x 2 ÷ 100 = 19
OR
Chapter 2 Review
7. At Medina Middle School, 2% of the students ride
bikes to school. If 950 students attend Medina
Middle School, how many students ride a bike to
school?
2% of 950 is
950
x.02
19.00 students
Chapter 2 Review
8. Sanford’s Shoe Store received a shipment of shoes
for its newest location. The manager determined
that 35% of the shoes were athletic shoes. What
fraction of the shoes were athletic shoes?
Chapter 2 Review
8. Sanford’s Shoe Store received a shipment of shoes
for its newest location. The manager determined
that 35% of the shoes were athletic shoes. What
fraction of the shoes were athletic shoes?
÷5
35% =
35
100
=
÷5
7
20
Chapter 2 Review
9. Mark answered 18 out of 25 questions correct on
his math quiz. What percent of the questions did he
get correct?
Chapter 2 Review
9. Mark answered 18 out of 25 questions correct on
his math quiz. What percent of the questions did he
get correct?
18
25
?
= 100
x4
18 x 4 = 72%
OR
Chapter 2 Review
9. Mark answered 18 out of 25 questions correct on
his math quiz. What percent of the questions did he
get correct?
00.72
25)18.0
175
50
-50
0
0.72 = 72%
Chapter 2 Review
10. The fastest fish in the world is the sailfish. If a
sailfish could maintain its speed, as shown in the
table, how many miles could the sailfish travel in 6
hours?
Chapter 2 Review
10. The fastest fish in the world is the sailfish. If a
sailfish could maintain its speed, as shown in the
table, how many miles could the sailfish travel in 6
hours?
x6
1 hr
6 hrs
68 miles = ? miles
68 x 6 = 408 miles OR
Chapter 2 Review
10. The fastest fish in the world is the sailfish. If a
sailfish could maintain its speed, as shown in the
table, how many miles could the sailfish travel in 6
hours?
+68
340 + 68 = 408 miles
+68
+68
+68
+68
+68
Chapter 2 Review
11.Carlita planted 4 flowers in 9 minutes. About how
many flowers can Carlita plant in 36 minutes?
Chapter 2 Review
11.Carlita planted 4 flowers in 9 minutes. About how
many flowers can Carlita plant in 36 minutes?
4 flowers
? flowers
9 minutes = 36 minutes
x4
4 x 4 = 16 flowers
OR
Chapter 2 Review
11.Carlita planted 4 flowers in 9 minutes. About how
many flowers can Carlita plant in 36 minutes?
Flowers
Minutes
16 flowers
4
9
8
18
12
27
16
36
Chapter 2 Review
12. What is the ratio of people to buses?
Chapter 2 Review
12. What is the ratio of people to buses?
÷6
6 buses
1 bus
150 people = 25 people
÷6
1:25
Chapter 2 Review
12. What is the ratio of people to buses?
÷6
150 people
25 people
6 buses = 1 bus
÷6
25:1
Chapter 2 Review
13. There are 6 vans that can hold a total of 48
people. If you need to transport 32 people, how
many vans will you need?
Vans
6
?
People
48
32
Chapter 2 Review
13. There are 6 vans that can hold a total of 48
people. If you need to transport 32 people, how
many vans will you need?
÷6
x4
Vans
6
1
?
People
48
8
32
÷6
OR
x4
Chapter 2 Review
13. There are 6 vans that can hold a total of 48
people. If you need to transport 32 people, how
many vans will you need?
Vans
6
?
People
48
32
6 𝑣𝑎𝑛𝑠
48 𝑝𝑒𝑜𝑝𝑙𝑒
8x6
=
? 𝑣𝑎𝑛𝑠
32 𝑝𝑒𝑜𝑝𝑙𝑒
1 x 32 ÷ 8 = 4 vans
Chapter 2 Review
14. Pam is painting a total of 45 square feet in her
bedroom. If she has painted 60% so far, how many
square feet of the bedroom does Pam still need to
paint?
Chapter 2 Review
14. Pam is painting a total of 45 square feet in her
bedroom. If she has painted 60% so far, how many
square feet of the bedroom does Pam still need to
paint?
60% of 45 is
.60 x 45 = 27 sf
Chapter 2 Review
14. Pam is painting a total of 45 square feet in her
bedroom. If she has painted 60% so far, how many
square feet of the bedroom does Pam still need to
paint?
60% of 45 is
.60 x 45 = 27 sf
45 sf – 27 sf = 18sf
Or
40% of 45 is
.40 x 45 = 18 sf
Chapter 2 Review
15. Copy the models below. Both models have the
same area.
A.
B.
Part A Shade 0.25 of Model A.
1
3
Part B Shade of Model B.
Part C Which model has the greater fraction of shaded area?
Chapter 2 Review
15. Copy the models below. Both models have the
same area.
Model A
Model B
Part C Which model has the greater fraction of
shaded area?
Chapter 2 Review
15. Copy the models below. Both models have the
same area.
Model A
0.25
Model B
1
= 0.3
3
0.3 > .25
Model B has a greater fraction shaded.
Chapter 2 Review
16. A class of 26 students ordered the items shown in
the table.
If the class agreed to split
the cost evenly, how
much will each student pay?
Chapter 2 Review
16. A class of 26 students ordered the items shown in
the table.
If the class agreed to split
the cost evenly, how
much will each student pay?
27 x $1.25 + 5 x $1.99 + 1 x $1.50 =
$33.75 + $9.95 + $1.50 = $45.20
$45.20
$1.74
26 students = 1 student
Chapter 2 Review
Agenda Notes
CH 2 In-Class assignment
(odd numbers only)
Raise hand when complete.
Skills Practice CH 2 Review
Due Monday, December 14
Semester Exam
Thursday, Dec 17