# Is .1 equal to .10?

degeneratecircle | High School Teacher | (Level 2) Associate Educator

Posted on

Yes, in the mathematical sense they are equal numbers. Trailing zeros can be omitted in math, so `.1=.10=.100000000,` and so on.

However, if these numbers represented "real life" measurements of some kind, then a measurement of `.10`is considered more precise than a measurement of `.1`, maybe due to a better measuring technique or a better instrument. That's the idea behind significant figures.

Sources:

taangerine | Student, Grade 12 | (Level 1) Valedictorian

Posted on

.1 and .10 are equal. The 0 behind the 1 does not matter because there isn't any nonzero number after the 0. Therefore, it does not count.

givingiswinning | Student, Grade 10 | (Level 1) Valedictorian

Posted on

Yes, they were equal

Wiggin42 | Student, Undergraduate | (Level 2) Valedictorian

Posted on

Is .1 equal to .10?

Yes, because the trailing zeroes don't matter. Just as leading zeroes don't really matter either :

00000.1 = .1 = .100000

Granted, with sig figs, .10 is more accurate than .1 but I don't think that is what you are looking for.

zumba96 | Student, Grade 11 | (Level 3) Valedictorian

Posted on

Yes they are both equal one number just has one more 0 and 0s don't affect it

atyourservice | Student, Grade 11 | (Level 3) Valedictorian

Posted on

Yes, those 2 numbers are equal