Lesson 4
Practice Makes Perfect
Prowess with powers
Page 128
When you are trying to find the actual value of a number written as a power, consider the power alone first. Put it into the form of a decimal number, then do the rest of the indicated arithmetic. In the present case you should proceed as follows:
3( 4 − 1 ) = 3⎛ ⎝ ( 1 )/( 4 ) ⎞ ⎠
Now return to Page 139 and try again.
Answer to Self-Test Question 6, Lesson 4 :
a . ( 4 )/( 3 ) ( 1 )/( 3 ) b . ( 6 )/( 4 ) ( 1 )/( 2 ) c . ( 5 )/( 4 ) ( 1 )/( 4 ) d . ( 7 )/( 9 ) e . ( 8 )/( 8 )
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