Practice B 8-1
Practice B 8-1
Practice B 8-1
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Name Date Class<br />
LESSON<br />
8-1<br />
<strong>Practice</strong> B<br />
Ratios and Rates<br />
Use the table to write each ratio.<br />
1. lions to elephants<br />
2. giraffes to otters<br />
3. lions to seals<br />
4. seals to elephants<br />
5. elephants to lions<br />
6. Write three equivalent ratios to compare<br />
the number of diamonds with the number<br />
of spades in the box.<br />
Animals in the Zoo<br />
Elephants 12<br />
Giraffes 8<br />
Lions 9<br />
Seals 10<br />
Otters 16<br />
Use the table to write each ratio as a fraction.<br />
7. Titans wins to Titans losses<br />
8. Orioles losses to Orioles wins<br />
9. Titans losses to Orioles losses<br />
10. Orioles wins to Titans wins<br />
Baseball Team Stats<br />
Titans Orioles<br />
Wins 12 9<br />
Losses 14 15<br />
11. A 6-ounce bag of raisins costs $2.46. An 8-ounce bag<br />
of raisins costs $3.20. Which is the better deal<br />
12. Barry earns $36.00 for 6 hours of yard work.<br />
Henry earns $24.00 for 3 hours of yard work.<br />
Who has the better hourly rate of pay<br />
Copyright © by Holt, Rinehart and Winston.<br />
9 Holt Middle School Math Course 1<br />
All rights reserved.
CHAPTER<br />
8<br />
Choose the best term from the list to complete each sentence.<br />
fraction numerator denominator equivalent<br />
angle triangle quadrilateral pentagon<br />
1. A(n) triangle is a three-sided polygon, and a(n)<br />
is a four-sided polygon.<br />
2. A(n) fraction is used to name a part of a whole.<br />
3. When two numbers have the same value, they are said<br />
to be equivalent<br />
.<br />
4. When writing 0.25 as a fraction, 25 is the numerator<br />
and 100 is the denominator<br />
.<br />
Write each fraction in simplest form.<br />
6<br />
5. 3 9<br />
5 <br />
1<br />
6. <br />
0<br />
1 2<br />
Write three equivalent fractions for each given fraction. Possible answers given.<br />
5<br />
1 0<br />
, 1 5<br />
1 , 2 <br />
0<br />
9. <br />
2 , 1 0<br />
20 , 2 5<br />
1 <br />
4 , 2 8 , 3<br />
<br />
12<br />
50<br />
12<br />
18<br />
24<br />
1<br />
8. 1<br />
4<br />
6<br />
Are You Ready Recording Sheet<br />
Ratio, Proportion, and Percent<br />
0<br />
7. 8 6 <br />
10. 5 6 <br />
Write each fraction as a decimal.<br />
3<br />
11. 0.3 1<br />
12. 3 0<br />
4 0.75 13. 5 8 0.625 14. 1 1<br />
12 0.916<br />
Write each decimal as a fraction in simplest form.<br />
7<br />
2<br />
3<br />
1 <br />
<br />
<br />
15. 0.5 2 16. 0.35 2 0 17. 0.08 2 5 18. 0.12 2 5<br />
Multiply.<br />
19. 0.42 • 10 4.2<br />
20. 0.3 • 52<br />
21. 20.5 • 0.25 5.125<br />
22. 6.75 • 0.40<br />
23. 9.8 • 0.2 1.96<br />
24. 0.8 • 7.4<br />
15.6<br />
2.7<br />
5.92<br />
25. 0.52 • 0.64 0.3328<br />
26. 0.75 • 8.9 6.675<br />
3 4 <br />
quadrilateral<br />
1 1 3 or 4 3 <br />
LESSON<br />
8-1<br />
Exploration Recording Sheet<br />
Ratios and Rates<br />
A TV network offers the numbers of shows each week shown<br />
in the table.<br />
You can compare the<br />
numbers of TV shows by<br />
using ratios. A ratio is a<br />
comparison of two quantities<br />
that uses division. For<br />
example, the ratio of science<br />
Type of TV Show<br />
Comedy<br />
Drama<br />
Science fiction<br />
Game show<br />
Number of Shows<br />
14<br />
14<br />
3<br />
7<br />
fiction shows to drama shows<br />
Talk show 15<br />
3<br />
is 1<br />
, which can also be<br />
4<br />
News 14<br />
written 3:14 or 3 to 14.<br />
Morning show 10<br />
Find each ratio.<br />
1. comedy shows to game shows<br />
2. game shows to news shows<br />
3. morning shows to late-night shows<br />
Late-night show 5<br />
Sports 6<br />
14:7 or 2:1<br />
7:14 or 1:2<br />
10:5 or 2:1<br />
4. talk shows to sports shows<br />
15:6 or 5:2<br />
Think and Discuss<br />
5. Discuss whether the ratios in Exercises 14 compare part<br />
to part, part to whole, or whole to part.<br />
Possible answer: The ratios compare part to part.<br />
6. Discuss whether order is important when calculating ratios.<br />
news<br />
(Hint: Is s<br />
equivalent to s ports<br />
)<br />
ports<br />
news<br />
Possible answer: Order is important when calculating ratios.<br />
The ratio 7 3 is not equivalent to 3 7 .<br />
Copyright © by Holt, Rinehart and Winston.<br />
3 Holt Middle School Math Course 1<br />
All rights reserved.<br />
Copyright © by Holt, Rinehart and Winston.<br />
7 Holt Middle School Math Course 1<br />
All rights reserved.<br />
LESSON<br />
8-1<br />
<strong>Practice</strong> A<br />
Ratios and Rates<br />
Use the table to write each ratio.<br />
1. angel fish to tiger barbs 4:5 Caroline’s Pet Fish<br />
Tiger Barbs 5<br />
2. red-tail sharks to clown loaches 1:3<br />
Catfish 1<br />
3. catfish to angel fish 1:4<br />
Angel fish 4<br />
4. clown loaches to tiger barbs<br />
5. catfish to red-tail sharks<br />
6. Write three equivalent ratios to compare the<br />
number of black triangles in the picture with<br />
the total number of triangles.<br />
Use the table to write each ratio.<br />
7. gray male kittens to gray female kittens<br />
2:5<br />
8. white female kittens to white male kittens<br />
5:3<br />
1:1<br />
3:5<br />
9. A candy store sells 2 ounces of chocolate for $0.80 and<br />
3 ounces of chocolate for $0.90. How much does the store<br />
charge per ounce for the 2 ounces of chocolate How much<br />
does the store charge per ounce for the 3 ounces of chocolate<br />
Which is the better deal<br />
$0.40; $0.30; the 3 ounces of chocolate<br />
Red-tail sharks 1<br />
Clown loaches 3<br />
Possible answer: 2:6, 1:3, 4:12<br />
Caroline’s Kittens<br />
White Gray<br />
Male 3 2<br />
Female 5 5<br />
LESSON<br />
8-1<br />
<strong>Practice</strong> B<br />
Ratios and Rates<br />
Use the table to write each ratio.<br />
1. lions to elephants 9:12 or 3:4 Animals in the Zoo<br />
2. giraffes to otters<br />
3. lions to seals<br />
4. seals to elephants<br />
5. elephants to lions<br />
8:16 or 1:2<br />
9:10<br />
10:12 or 5:6<br />
12:9 or 4:3<br />
6. Write three equivalent ratios to compare<br />
the number of diamonds with the number<br />
of spades in the box.<br />
Possible answer: 6:9, 2:3, 12:18<br />
Use the table to write each ratio as a fraction.<br />
1 2<br />
or 6<br />
7. Titans wins to Titans losses 14<br />
7 <br />
1 5<br />
or 5<br />
8. Orioles losses to Orioles wins 9 3 <br />
1 Baseball Team Stats<br />
4<br />
9. Titans losses to Orioles losses 1 <br />
Titans Orioles<br />
5<br />
9<br />
10. Orioles wins to Titans wins 1<br />
or 3 Wins 12 9<br />
2 4 <br />
Losses 14 15<br />
11. A 6-ounce bag of raisins costs $2.46. An 8-ounce bag<br />
of raisins costs $3.20. Which is the better deal<br />
12. Barry earns $36.00 for 6 hours of yard work.<br />
Henry earns $24.00 for 3 hours of yard work.<br />
Who has the better hourly rate of pay<br />
Elephants 12<br />
Giraffes 8<br />
Lions 9<br />
Seals 10<br />
Otters 16<br />
the 8-ounce bag<br />
Henry<br />
Copyright © by Holt, Rinehart and Winston.<br />
8 Holt Middle School Math Course 1<br />
All rights reserved.<br />
Copyright © by Holt, Rinehart and Winston.<br />
9 Holt Middle School Math Course 1<br />
All rights reserved.<br />
Copyright © by Holt, Rinehart and Winston.<br />
110 Holt Middle School Math Course 1<br />
All rights reserved.
Change language