this post was submitted on 09 Nov 2023
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[–] Sludgeyy@lemmy.world 8 points 10 months ago (1 children)

1% of 33 is .33

.33 × 7 =

.3 x 7 = 2.1

.03 x 7 = .21

21 + 2.1 = 2.31

So

7% of 33 = 2.31

You could also do

33% of 7

10% of 7 is .7

1% of 7 is .07

So 11% is .77

.77 × 3 =

.7 × 3 = 2.1

.07 × 3 = .21

2.1 + .21 = 2.31

[–] PunnyName@lemmy.world 5 points 10 months ago (1 children)

That's pretty damned intensive for a trick that's supposed to make the maths easier.

[–] plague_sapiens@lemmy.world 2 points 10 months ago* (last edited 10 months ago)

Who said math will be ever easy?