# Math Is Fun Forum

Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫  π  -¹ ² ³ °

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## #1 2021-12-11 10:33:46

Hannibal lecter
Member
Registered: 2016-02-11
Posts: 330

### basic algebra "multiplication"

hi,
what happen when we multiply decimal by a percentage and it is different from the concept of regular multiplication numbers concept
for example
multiply 3 * 4 is  3 + 3 + 3 + 3 = 12 or 4+4+4 = 12
the clearest explanation of this simply mean 4 copies of 3 added togather or 3  copies of 4

but
when we multiply
100 * 50% it's clearly mean 100 * 50/100 = 100

what is the deep explanation of that mean?

Wisdom is a tree which grows in the heart and fruits on the tongue

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## #2 2021-12-12 03:22:14

Bob
Registered: 2010-06-20
Posts: 9,358

### Re: basic algebra "multiplication"

Percent means per 100 so you can always replace % by /100

That's all really.

B

Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

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