I learned that if you need certian parts worked out first they should be in brackets
so I would have come up with 20. but if I put 10 + 10 x 0 in to a scientific calculator I get 10 but if I put it in to a normal calculator I get 0. Odd.
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Peej, Sun 5 Jun 2011, 11:13,
Reply)
Yeh...
...pocket calculators don't evaluate the entire expression when you press 'equals,' it performs that operation to the result of the previous operations, so 1 + 2 * 3 will be evaluated as (1 + 2) * 3, when you should think of it as 1 + (2 * 3).
(, Sun 5 Jun 2011, 11:20, Reply)
Yeh if I ask Google as a whole maths problem it says 10
but if I type it into a simple handheld calculator it says 20, presumably tho 'cos I'm not changing the order.
Confusing!
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..wil, Sun 5 Jun 2011, 11:20,
Reply)
It should say 0...
...because the final operation is multiply by 0, which is always, you guessed, 0.
(, Sun 5 Jun 2011, 11:30, Reply)
Oh yeh correct,
sorry I got that wrong!
Jeez it's a LONG time since i had to do math in my head, curse of the modern world I guess!
*edit* Which means I wrote my OP wrong too, DUH! I think I regressed to my 8 yo self when we were taught to do basic maths problems with pennies, I forgot a multiplication by zero is zero rather than thinking of it as unchanged physical objects, same as a division by zero is INFINITY AND BEYOND!!
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..wil, Sun 5 Jun 2011, 11:35,
Reply)