Chapter 5 Lesson 4 – Math Notes
Percent:
Name: ______________________
percent means per hundred
Examples: For each problem, create a proportion and solve using the heart method.
1.
is
%

of 100
What number is 75% of 600 ?
x
75

600 100
100 x 45,000

100
100
x  450
Show work:
Think to yourself: What number is 65% of 300 ?
is
%

of 100
STEP 3 Create a proportion
and solve using the heart
method. (Think to yourself,
What number is 45% of
4,000 ? )
is
%

of 100
_____________ = _____________
100
Directions: For each problem, create a proportion and solve using the heart method.
Think to yourself: What number is 25% of 320 ?
5. A jar contains 125 marbles. Given that 4%
of the marbles are green, 60% of the marbles
are blue, and the rest are red, how many red
marbles are in the jar?
6. There are 32 students in Mrs. Heil’s class
and 62.5% of the students are girls. How many
boys are in the class?
Continue Chapter 5 Lesson 4 on pages 203 and 204 in the Big Book