Approximate Digit Use
Use the digits 1, 2, 3, 4, 5, 6, 7, and 8 exactly once to make two decimal numbers whose product is approximately 0.16.
0. ___ ___ ___ ___ x 0. ___ ___ ___ ___ =~ 0.16
(Source: Mathematics Teaching in the Middle School, NovDec1995)
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