Exercise. Adding and subtracting of two mixed numbers.

Exercise. Please, find the value of sum (difference) of two fractions, write the answer and press the button "Submit".

Assessment of tasks for: addition and subtraction of mixed numbers

1. The maximum you can get 4

   points

   when solve the exercise
2. You will get less points if don t convert improper fractions into mixed numbers or don t simplify fraction

After pressing the , you will know right or wrong, you have solved the problem.

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Attention!!! If you skip an example, it is counted as a not solved and you can not come back to it.

To add two mixed numbers, it is necessary:
• to reduce fraction to a least common denominator;
• add the numerators and put the answer over the same denominator;
• simplify the fraction;
• if this fraction is improper then convert fraction to a mixed number;
• add the integer portions of the two mixed numbers;
• if adding the fractional parts created a mixed number then add its integer portion to the sum.

To subtract two mixed numbers, it is necessary:
• to reduce fraction to a least common denominator;
• make the first numerator larger than the second if it is not;
• subtract the second numerator from the first;
• place that difference over the common denominator;
• Subtract the integer portions of the two mixed numbers;
• simplify the fraction.