chapter 2 Flashcards
The first term in a ratio.
antecedent
the first and last terms of a proportion
extremes of a proportion
Two equal ratios joined by an equal sign.
proportion
the product of the means should equal the product of the extremes.
In a proportion
75% written as a decimal is
.75
What is 1/2 written as a percent
50%
A ratio compares two numbers or quantities using
multiplication or division
divison
What is the second term in a ratio called?
consequent
85% of 90
76.5
6% of $4,379
$262.74
4/5 = x/20
x=16
How do you determine what 4/5 written as a percent is, and what is the answer?
Change fraction to decimal, then move decimal two places to the right. 80%
Round .736 to the nearest tenth
.7
Write the consequent in the ratio 8:5
5
What is greater: .076 or .08
.076<.080
Complete the proportion
3/8=×/24
8x=72
8×/8=72/8
×=9
Find the percent of increase from 15 apples to 18 apples
Find the percent of increase from 15 apples to 18 apples
Find the percentage of decrease from $50 to $40.
50-40=10, 10/50=1/5=.2=
20% decrease
Round off $756.247 to the nearest cent.
$756.25
Write 6 3/4% as a decimal.
.0675
Multiply 1,625 by 100.
162,500
8.25 is a mixed decimal?
yes
is 100% - 18%= 86%
no
Can the ratio method be used to find a percentage?
Yes
is 3 4/5=3.6?
no
is 50% of 475 is 236.5?
no
Mr. Frank made $300 for a 20-hour week. Last week he began making 8% more. How much does he make per week now?
$300
× 1.08
$324.00
Auden bought a 6 books for $1.38. How much would 9 books cost at the same rate?
6/1.38=9/×
6x=12.42
12.42/6
x=$2.07
John bought a game for $42. The sales tax 6%. Find the total cost of the game.
1.06
x$42
$44.52
Percent means in
hundredths
