Answer: 4/10 + 1/5 = 0.6 and 4/10 - 1/5 = 0.2.
Step-by-step explanation:
1. Convert the fractions into decimals by dividing the numerator(the number to the left or top of the fraction) by the denominator(the number to the right or bottom of the fraction.
2. For the first question, add the two decimals to get your answer. For the second question, you subtract. 0.4-0.2.
