0.1*0.1=0.01 But it comput 0.01000000000000002

Yes, I’ve seen some of these rounding errors. You might have to use the “round” block to force the correct value. I’m actually having a problem where 0 + 75 x 0 = 10.98124675. Kind of hard to wrap my mind around that one! The 75 is a numeric value but… I’m pretty sure zero times anything is zero.

Wow- that’s way bigger than rounding error!

Yeah, and I’ve only noticed it on the Canvas. I’m setting a sprite’s y position to 0 and another sprite’s y position to 75. The “app variable bar spacing” is set to 75 at initialization. [image] When I check the value of bar 1’s y position using a canvas label, it gives me that crazy 10.9… number…

@domhnallohanlon I think it is necessary to notify thunkable :rofl:

Reported this bug here: Sprite's y position is altered opened 03:37AM - 26 Apr 21 UTC (UTC) [tatiang] tatiang ### Platform Thunkable X, drag-and-drop …

I think you found the secret robot internet* @tony.ycy.program :joy: *source: Saturday Morning Breakfast Cereal - 2013-06-05 Joking aside, I’ll flag this with the team and see what we can do. Thanks!

It was a joke. It’s a robot secret because typically humans don’t see these weird math outcomes. However, the computer always knows what it thinks. Check out this blog post for more information about why you’re getting this weird outcome. One piece of base knowledge you must have is the knowledge t…

Still don’t really get this: In JavaScript, all numbers are floating-point numbers, so when we write expressions like 0.1 + 0.2 , it’ll return some numbers that we don’t expect like 0.30000000000000004 . 0.1 and 0.2 are approximated to their true values. The approximated value of 0.2 is larger th…

The issue is that the computer represents everything in binary, to a limited amount of precision. So you can get weirdness like that because your values get converted into floating point numbers, then back to decimal after the addition, and they get just slightly off in the process. You can hide t…

0.1*0.1=0.010000000000002 (error)

Questions about Thunkable X

catsarisky April 27, 2021, 10:46am 16

If you limit your display to 6-8 decimal places, you won’t see it either.

Help with square root

Topic		Replies	Views
Variable change problem Questions about Thunkable X	4	176	January 8, 2024
Multiplication answer is not quiet right Questions about Thunkable X	1	127	November 22, 2023
The issue about adding two values of decimal members? Questions about Thunkable X solved , beginner , help	13	1091	February 14, 2022
Showing two decimal place numbers and adding them properly Questions about Thunkable X math	17	1184	June 26, 2023
Rounding number crash apps (drag and drop project) Questions about Thunkable X	2	432	June 30, 2021

0.1*0.1=0.010000000000002 (error)

Related topics