Lesson 4
Practice Makes Perfect
Prowess with powers
Page 148
Your answer :
2( 10 − 1 ) + 5( 10 − 2 ) = ( 2 )/( 10 ) ( 5 )/( 100 ) .
It is true that
2( 10 − 1 ) + 5( 10 − 2 ) = ( 2 )/( 10 ) ( 5 )/( 100 )
But if we use the system of decimal fractions that you learned in school, there’s a tidier way of writing
( 2 )/( 10 ) ( 5 )/( 100 )
Return to Page 133 and choose the answer in the form of a decimal fraction.
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