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Modulo and floor division?
Could somebody explain it to me Iām 14 and I donāt think we learn modulo in Australia. Iāve never hear of either of these things.
3 Answers
+ 2
You definitely know about division and how it was done in elementary school.
For example to calculate 7/2 you have to look how many 2's fit in there. Obviously 3, because 3*2=6 but 4*2 = 8, which is too much.
However, there is still some rest. 7 = 3*2 +1
And this rest is the result for 7%2.
Therefore modulo is just a compact way to note it down.
Floor division is much simpler. Everything after the decimal point is just cropped.
3.213 -> 3
3.817 -> 3
(mostly done for integer division)
Ceil would be the other way round
3.213 -> 4
3.817 -> 4
And normal round
3.213 -> 3
3.817 -> 4
+ 3
modulo is the remainder from division. say 5/2 = 2.5, 5%2 = 1
+ 2
floor division is if you say 5/2, instead of saying 2.5 is the answer you say 2. because you round it down to the nearest integer. or number without decimals