3.42 as a fraction or mixed number

171/50 or 3 and 21/50

Step-by-step explanation:

Multiply 3.42 by 100 and get 342/100. This is because we need to turn 3.42 into a whole number (no decimals) so we continuously multiply by 10. Find the greatest common divider, which in this case is 2, and divide it by the numerator and denominator. Therefore, we get 171/50. To turn it into a mixed number, we just divide 171 by 50 (which is 3 and 21/50)

3.42 as a fraction is 171/50 and as a mixed number will be 3 21/50