

1 
Word Problems. MultiChoice Practice. (10 possible
points).

Bill
rode his skateboard (with a helmet) 25 miles in 80 minutes. How
many miles can he ride his skateboard in 60 minutes (at the same pace)? 

Aurora HC212
8 digit, Solar / Battery power calculator 
Formula: 25 _{=} x
80 60
25 * 60 = 80x cross multiply
25 * 60 ÷ 80 = x isolate for x
x = 25*60÷80
Calculator: 25x60÷80=
Start off by setting it up mathematically.
Setup: 25 mi _{ =} x mi
80 min 60 min
25 miles in 80 minutes is expressed as 25 mi 80 min
How many miles in 60 minutes is expressed as x mi 60 min
First step: Cross multiply: 60*25 = 1500 (60 times 25. done below)
so 1500 = 80x
1500 equals 80x (80 * x)
2nd step: Isolate x by dividing each side by 80.
1500 _{= }80x _{ }80x 80 80 80 cancels to x
_{Third step: Rewrite as} _{x}_{ = 1500 } ^{ 80}
4th step: Divide 1500 by 80, equals 18.75.
^{ T}^{he answer is 18.75 miles in 60 mins}^{ (mph) }^{. }
1 

1. cross multiply: 60x25 = 1500
so 1500 = 80x
1500 equals 80x
Calculator: press 60X25= (60x25 =
1500)
(= sign gives result)
Note the ÷,x,,= signs. 

2 

divide 1500 by 80 by pressing
÷80=
(divide sign, 80, equal sign)
result is 18.75 miles in 60
mins.
(fast for a skateboard) 

Choose the letter of the correct
answer:
A. 17 B. 18
C. 18.75 D. 20 and enter it in the answer box below:



Answer Box.
Check it with the Test Button.


California High School Exit Exam (CAHSEE)
Mathematics Section


(needs
revision.) Success in Math
requires knowledge of Algebra and Functions, strand #3 of the CAHSEE. Measurement / Metrology, including the conversion
between the US and the Metric System. Therefore this
lesson includes comparing weights,
capacities, geometric measures, times, and temperatures within and
between measurement systems.
(e.g., miles per hour to kilometers per hour to
feet per second, and cubic inches to cubic centimeters).
The California High School Exit Exam  "CAHSEE"
 Mathematics Section verifies that the student
has learned these skills for life and career. The
focus of this exam on the
"Measurement and Geometry" (MG) Strand" is to reinforce the learning
of these skills. The approach of
this lessonquiz is to "hardcalculate" the answer, thus earning a
"sense of range."
This lesson relates to the
4MG1.1 Standards of Comparing
measurement systems.
A good working set of Math skills is vital
for success in vocations, professions, trade schools, and higher education, specifically, in this case,
skills in Metric conversions are essential. The developers of this lesson ask that you
spend sufficient time with it until you hit the mastery level!
The "greater the handson involvement" the "greater learning"!
 Learn by doing! Use as many ways as you canto learn. This lesson aims to
teach you several ways to calculate, ways to apply Math, a problemsolving process, a 'sense of range',
practical applications, and reinforces, by repetition, your math skills.
Keep your hand on the mouse, and take control of your learning!
Doublecheck and "range check" every answer. Push the edge of your
learning. Go beyond the lines. Make a list of metric distances to check out.
Share this program with your friends. Teach them to pass this lesson!
Extra credit given for helping other students learn this lesson!
Show us what you can do! (acknowledgement to La Canada HS for CAHSEE logo.)
Press "Replay" to start over.






WPM

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