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New! - Multiplication game - catch the hodag!


Adding and subtracting with negatives activity


Factoring Game


How to solve:
Problems:     A. What is 20% of 160?
B. 36 is what percent of 90?
C. 40 is 80% of what number?
1. Translate into math:
is = “=”
of = “*”
What = “x”
5% = “5/100”, etc.
    A.
What is
20%
of 160?
x = (20/100) * 160.

B.
36 is
what %
of 90?
36 = (x/100) * 90.

C.
40 is
80%
of what number?
40 = (80/100) * x.

2. Simplify & solve for x:
(This may involve solving a linear equation -
click here to see how.)
    A. x = (.2)*160, so x = 32
B. 36 = (.9)x, so x = 40
C. 40 = (.8)x, so x = 50

Here are some to try:

      






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(Starts timer)
     




              





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