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Tyrion101

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- Thread starter Tyrion101
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Tyrion101

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- #2

symbolipoint

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You must be more precise. After hours trying to do WHAT problem? What is the exact problem description?

- #3

Tyrion101

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I'm just asking if it is a wrong idea to do the problem without really understanding why it works.

- #4

Nugatory

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I'm just asking if it is a wrong idea to do the problem without really understanding why it works.

It depends on the problem. Sometimes, working through a problem and watching the machinery at work is a good way of understanding how and why it works. Other problems... not so much. And because different people learn in different ways, the answer may be different for different people.

So I'm inclined to agree with symbolipoint - you'll get better answers and more insightful discussion if you can provide a few specific examples.

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Tyrion101

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- #6

Mark44

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Tyrion101

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When does it matter to have numbers us letter or letter minus number?

- #8

Mentallic

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When does it matter to have numbers us letter or letter minus number?

???

This makes absolutely no sense.

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Tyrion101

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- #10

Mark44

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Assuming you meant "numbersWhen does it matter to have numbers us letter or letter minus number?

the expressions x - 2 and 2 - x are opposite in sign. If x = 5, say, then x - 2 = 3 and 2 - x = -3.

- #11

Mark44

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The problem doesn't "want" anything. You have to translate what the problem says into symbols.

For example, if you have a stick that's 30 inches long, and you need to cut it into two pieces, one of them will be x inches long and the other piece will be 30 -x inches long. If you add the lengths you get 30". If you switch the order and get x and x - 30, then the sum of these lengths will no longer be 30.

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- #12

symbolipoint

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Understanding the common human language in which the problem is written is a requirement.

Studying and doing exercises for translating worded descriptions into numeric symbolism is necessary in order to develop skill in formulating numeric expressions and equations from the worded descriptions. This is often the goals of Basic Math, Basic Arithmetic, Pre-Algebra, Algebra 1,2,3.

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