Answer: 1 and 18/50
Step-by-step explanation: Using the place value chart, we can see that 1.18 is 1 unit, 1 tenth, and 8 hundredths. Think of one one-tenth and eight-hundredths as 18/100 so we have 1 and eighteen-hundredths which can be written as the mixed number 1 and 18/100.
We can reduce 18/100 by dividing both the numerator and denominator by 2 and we will get 9/50.
Therefore, 1.18 can be written as the mixed number 1 and 9/50.