jeopardy 7.1 ratios 7.2 proportions 7.3/7.4 fractional equations 7.5 percent basics 7.6 percent word...
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JEOPARDY7.1
Ratios7.2
Proportions7.3/7.4
FractionalEquations
7.5Percent Basics
7.6 Percent
Word Probs
100 100 100 100 100
200 200 200 200 200
300 300 300 300 300
400 400 400 400 400
Ratios 100
Write in simplest form:
18
0.5
Ratios 100 answer
36
1
Ratios 200 Write in simplest form:
35 minutes: 7 seconds
Ratios 200 answer 300:1
Ratios 300
The ratio of pigs to cows on the farm is 6:7. There are 39 pigs and cows total on the farm. How many cows are there?
Ratios 300
answer:
21 cows
Ratios 400 Three numbers have ratio 4:6:9 and sum to 47.5. Find the largest number.
Ratios 400 answer
The largest number is 22.5.
Proportions 100
Every proportion can be solved by ___.
Proportions100 answer cross multiplying
Proportions 200
True or False:
14/29 and 15/31 make a proportion.
Proportions 200 answerFalse
Proportions 300
1.
5 8
x xSolve
Proportions 300 answer
x = 5/3
Proportions 400
10 1Solve .
4 1
x
x x
Proportions 400 answer:1st: Cross multiply
2nd: Solve by factoring
Solution:x = 5, x = 2
or
{5, 2}
Fractional Equations 100
Find the LCD:
x - 5 x 1
x + 3 3 x
Fractional Eqns 100 answer
3x(x+3)
Fractional Equations 200
Solve 23 9
a a
Fractional Eqns 200 answer
{9}
Fractional Equations 300
0.05 6.6 0.06
Find the LCD and solve
x x
Fractional Eqns 300 answer
100
60
LCD
x
Fractional Equations 400
r 1
Solve 12r + 4 2r
Fractional Eqns 400 answer
1st: Find the LCD. (2r + 4)
2nd: Multiply through by the LCD.
3rd: Solve for r.
r 11
2r + 4 2
2 2 4
.
6
r
r r
etc
r
% Basics 100Write as percents:a) 0.9b) 0.0068c) 13/100
% Basics 100 answer
a) 0.9 = 90%b) 0.0068 = .68%c) 13/100 = 13%
Find 13% of 9.
% Basics 200
% Basics 200 answer:Find 13% of 9.
(0.13)(9) = 1.17
13% of 9 = 1.17
% Basics 300What percent of 30 is 2?
% Basics 300 answer
(30) 210030 200
200
30
6.6
2 6.67% 30
x
x
x
x
is of
What percent of 30 is 2?
% Basics 400
a) What is the new price Bob will pay for an $80 hat if it gets discounted 20%?
b) What will the final price be if he must pay 5% sales tax?
% Basics 400 answers
a) What is the new price Bob will pay for an $80 hat if it gets discounted 20%?80 – (0.20)80 = 80 – 16 = $64Bob will pay $64.
b) What will the final price be if he must pay 5% sales tax?64 + 64(0.05) = 64 + 3.20 = $67.20The final price after tax is $67.20
More Percents 100
Jack bought a dog for $300. It won several championships at dog shows and appreciated to $500. What was the percent increase in value of the dog?
More Percents 100 answer
Jack bought a dog for $300. It won several championships at dog shows and appreciated to $500. What was the percent increase in value of the dog?
%
100
200
300 100
20000 300
20000
300
66.6
67% .
change
original
x
x
x
x
This is increase
More Percents 200
Jill earned $600 last year on an account earning 4.75%. How much had she invested originally?
More Percents 200 answer
Jill earned $600 last year on an account earning 4.75%. How much had she invested originally?
0.0475 600
600
0.0475$12,631.58
x
x
x originally invested
More Percents 300
Lou saved money by buying a CD on sale
for $6.36. If the original price was $7.95,
what was the percent of the discount?
More Percents 300 answer
7.95 6.36
7.95 100
20
20%
x
x
discount
More Percents 400
Pug invested $6000 in two accounts: part in account A earning 6% and another part in account B earning 11%. If Pug earned $580 total for the year, how much was invested in each account?
More Percents 400 answer
Pug invested $6000 in two accounts: part in account A earning 6% and another part in account B earning 11%. If Pug earned $580 total for the year, how much was invested in each account?
$1600 invested in account A; $4400 invested in account B
JEOPARDY (handout)
7.1 Ratios 7.2 Proportions 7.3/7.4
Fractional Equations
7.5 Percents 7.6 More Percents
100 100 100 100 100
200 200 200 200 200
300 300 300 300 300
400 400 400 400 400
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