# Quiz Over Common Denominators

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| By Tafelizzy
T
Tafelizzy
Community Contributor
Quizzes Created: 7 | Total Attempts: 8,643
Questions: 10 | Attempts: 959

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This quiz will help you practise adding and subtracting fractions with common denominators. Good luck and enjoy.

If you have trouble with any of these questions, watch the video again.

Questions and Answers
• 1.

### Add the following fractions: Change Improper Fractions and Simplify where needed.When typing fractions, use the  /  key (it is next to the 'shift' key).Example:  1/2 = one half.

• A.

3/4

• B.

3/8

Correct Answer
A. 3/4
Explanation
The given question asks to add the fractions 3/4 and 3/8. To add fractions, we need to have a common denominator. In this case, the common denominator is 8. We can convert 3/4 to an equivalent fraction with a denominator of 8 by multiplying both the numerator and denominator by 2. This gives us 6/8. Now, we can add 6/8 and 3/8 together, which equals 9/8. However, since 9/8 is an improper fraction, we need to simplify it. Dividing both the numerator and denominator by their greatest common divisor, which is 1, we get the simplified fraction 9/8.

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• 2.

### Subtract the following fractions: Change Improper Fractions and Simplify where neededWhen typing fractions, use the  /  key (it is next to the 'shift' key).Example:  1/2 = one half.

Correct Answer
1/4
• 3.

### Add the following fractions: Change Improper Fractions and Simplify where neededWhen typing fractions, use the  /  key (it is next to the 'shift' key).Example:  1/2 = one half.

Correct Answer
5/7
• 4.

### Subtract the following fractions: Change Improper Fractions and Simplify where needed             When typing fractions, use the  /  key (it is next to the 'shift' key).Example:  1/2 = one half.

Correct Answer
1/7
• 5.

### Add the following fractions: Change Improper Fractions and Simplify where needed        When typing mixed numerals, first type the whole number and then a SPACE then type your fractionusing the  /  key (it is next to the 'shift' key).Example:  1 1/2 = one and one half.

Correct Answer
1 1/11
• 6.

### Subtract the following fractions: Change Improper Fractions and Simplify where neededWhen typing fractions, use the  /  key (it is next to the 'shift' key).Example:  1/2 = one half.

Correct Answer
2/11
• 7.

### Add the following fractions: Change Improper Fractions and Simplify where neededWhen typing fractions, use the  /  key (it is next to the 'shift' key).Example:  1/2 = one half.

Correct Answer
11/12
• 8.

### Subtract the following fractions: Change Improper Fractions and Simplify where neededWhen typing fractions, use the  /  key (it is next to the 'shift' key).Example:  1/2 = one half.

Correct Answer
1/4
Explanation
To subtract fractions, we need to have a common denominator. In this case, both fractions already have the same denominator, which is 4. Therefore, we can subtract the numerators directly. 1 minus 0 is 1. So the result is 1/4.

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• 9.

### Add the following fractions: Change Improper Fractions and Simplify where neededWhen typing mixed numerals, first type the whole number and then a SPACE then type your fractionusing the  /  key (it is next to the 'shift' key).Example:  1 1/2 = one and one half.

Correct Answer
1 1/2
• 10.

### Subtract the following fractions: Change Improper Fractions and Simplify where neededWhen typing fractions, use the  /  key (it is next to the 'shift' key).Example:  1/2 = one half.

Correct Answer
1/2
Explanation
To subtract fractions, we need to have a common denominator. In this case, the denominators are already the same, so we can simply subtract the numerators. Therefore, 1/2 minus 0 is equal to 1/2.

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• Current Version
• Mar 22, 2023
Quiz Edited by
ProProfs Editorial Team
• Aug 06, 2009
Quiz Created by
Tafelizzy

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