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Fast Math - Randomized Fraction Addition

In this quiz the answers change every time you play! Solve these randomised addition of fractions problems as fast as you can!

FORMAT: JetPunk only recognises A-Z and 0-9, so you can't input fractions directly. Simply input TOP followed by BOTTOM in the fraction's simplest form. I.e. if the answer is 3/6, simplify to 1/2 and type either "12", "1 2", "1/2" etc...
Answer must correspond to highlighted box!
Quiz by
Stewart
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Last updated: January 16, 2019
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First submittedJanuary 15, 2019
Times taken14,399
Average score50.0%
Rating4.92
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Problem
Solution
1/6
+
8/11
59/66
3/4
+
6/9
17/12
4/5
+
4/11
64/55
8/9
+
5/12
47/36
4/12
+
1/6
1/2
Problem
Solution
1/11
+
2/5
27/55
2/11
+
3/11
5/11
8/9
+
5/10
25/18
7/10
+
6/8
29/20
4/11
+
1/12
59/132
Problem
Solution
6/11
+
2/3
40/33
6/8
+
7/12
4/3
3/10
+
2/10
1/2
8/11
+
2/3
46/33
4/6
+
5/8
31/24
Problem
Solution
2/9
+
1/10
29/90
3/12
+
4/8
3/4
3/9
+
1/11
14/33
4/8
+
6/12
1/1
5/10
+
9/12
5/4
Save Your Stats
Your Next Quiz
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10 Comments
+2
Level 80
Jan 16, 2019
Great! There was a mistake in one of my questions: 1/12 + 9/11 =55/61
+2
Level 68
Jan 16, 2019
Hmm, that's rather peculiar because I generated all these using Excel. I'll look into though
+2
Level 68
Jan 16, 2019
I fixed it! Turns out the format for Fractions in excel was defaulting to two digit numbers as the Numerator and Denominator, thus anything with 3 digits would be rounded up or down. Hence the answer was adjusted slightly.

All fixed now though! Thanks for pointing it out :)

+1
Level 67
Mar 26, 2023
if you think this is hard, use this formula :

(a / b) + (c / d) = (ad + bc) / bd

+1
Level 37
Oct 7, 2023
You should use 1 instead of 1/1.
+1
Level 37
Oct 7, 2023
The inproper fractions should be change into mixed fractions: 9/8 can be 1 1/8.
+3
Level 63
Jul 12, 2024
Why? That makes very little sense here.
+1
Level 76
Jul 11, 2024
Awesome quiz! Nominated.
+1
Level 66
Mar 13, 2026
7/12+5/7

Answer: 109/84

0%

100%

2/9+10/12

Answer: 19/18

0%

100%

How do 0% of people get these? Am I the only one who has gotten these two questions?

+1
Level 68
Mar 13, 2026
Most people will struggle with these due to larger bases.

Additionally, there are over 4000 possible answers. Given you get 20 at a time, that means each answer only appears to 1 in every 200 players. With a total of 13000 takes as of writing, that means these questions have likely only been shown 65 times. Given the replayability, and that only the first take of each person is counted towards the stats, I would say it is quite likely not many people have had this question.

On top of all that, statistics on randomized quizzes only got introduced in 2024, meaning only around 7000 of the current takes could possibly be counted towards the stats.