Question about Texas Instruments TI-30XA Calculator

I know I must be punching the problem wrong somehow....I an always off by 1 exponent when doing the problem 1500 divided by 10^9. I get 1.5*10^-7. That is wrong. The answer is 1.5*10^-6. What am I doing wrong? Thanks for any help

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Without knowing exactly what you're doing I can't be sure, but I suspect you're entering the 10^9 as something like 1 0 EE 9 .

1 0 EE 9 gives you 10 * 10^9, which is 10^10. You should be doing this as 1 5 0 0 / 1 EE 9 = .

Posted on Nov 07, 2012

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Posted on Jan 02, 2017

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SOURCE: negative answer when squaring a neg number

You must put all negative numbers in Parenthesis otherwise your calculator is not squaring the negative .

Posted on May 05, 2008

SOURCE: dividing by a negative exponent

(2x3^2) divided by (2x3^(-2))

just make sure to use double parenthesis around the negative exponent so that you get the right answer

Posted on Feb 08, 2009

SOURCE: I have a TI-30XS Calculator

One solution that you might try is to put the scientific numbers in parentheses. For instance open parenthesis, type in the first scientific notation then close parenthesis, next hit the divide key and then open parenthesis and type in the 2nd number in scientific that you are dividing by and then close parenthesis. Hit enter or =. I'm not sure if this will fix your problem, but it is worth a try.

Posted on Aug 29, 2009

SOURCE: How to use negative exponents on a calculator?

your calculator will never allow you to enter a negative exponent. so heres what you do.Any negative exponent of a number can be reversed and turned into a fraction for example 4^-1=1/4 or 8^-2=2/8=0.25. Hope this helps.

Posted on Sep 21, 2009

SOURCE: how do i get rid of the exponent?

Do not panic!. Press [MODE]. On first line of MODE set up screen use arrow keys to highlight NORMAL and press [ENTER].

Use down arrow key to go to the line starting with FLOAT, and highlight the number of digits you want your results to display (from 0 to 9). Keep in mind that with 0, all your results will be rounded to the nearest integer. With 9, you have a large stream of digits (not necessarily a more accurate result).

However, if your results are too small or too large, the scientific display format ( with E )will be used regardless of the MODE setup.

Posted on Mar 13, 2010

5/6 divided by 11/12 is the same as 5/6 times 12/11 which is

10/11. 10 divided by 11 is___________.

10/11. 10 divided by 11 is___________.

Sep 24, 2015 | Cars & Trucks

2/5 because 4/10 is also 2/5.

1/5 + 2/5 + 2/5 = 1 or 1 - 1/5 - 2/5 = 2/5.

1 = 5/5 or 10/10 and 1/5 is 2/10 and 3/15 and 4/20 and so on. Multiply both above and under the divider line and you have the same amount.

Please when you try to do your home work like this, don't forget the answer is less important. Understanding how you came to is is the most important thing of learning.

1/5 + 2/5 + 2/5 = 1 or 1 - 1/5 - 2/5 = 2/5.

1 = 5/5 or 10/10 and 1/5 is 2/10 and 3/15 and 4/20 and so on. Multiply both above and under the divider line and you have the same amount.

Please when you try to do your home work like this, don't forget the answer is less important. Understanding how you came to is is the most important thing of learning.

Apr 15, 2015 | Sunburst Fraction Attraction (t02836) for...

The easiest way to figure this out is to reverse the problem.

Since multiplication is the opposite of division you can reorder the problem to get the solution.

The problem: y / 4 = 10.125

Reversed: 10.125 x 4 = y

The answer is 40.5 since 40.5 / 4 = 10.125

Since multiplication is the opposite of division you can reorder the problem to get the solution.

The problem: y / 4 = 10.125

Reversed: 10.125 x 4 = y

The answer is 40.5 since 40.5 / 4 = 10.125

Feb 27, 2015 | Office Equipment & Supplies

I assume you mean (2x12)/4+10-6 as in your first post. I can understand how you got the wrong answer of 3 in that case but not as you wrote it here.

Multiplication and division get precedence over addition and subtraction.

First, evaluate the expression inside the parentheses: 2x12 is 24.

Then divide by 4 to get 6.

Add 10 to get 16.

Subtract 6 to get 10.

If you incorrectly do addition and subtraction before division then you divide 24 by 4+10-6 (which is 8) and get 3.

Multiplication and division get precedence over addition and subtraction.

First, evaluate the expression inside the parentheses: 2x12 is 24.

Then divide by 4 to get 6.

Add 10 to get 16.

Subtract 6 to get 10.

If you incorrectly do addition and subtraction before division then you divide 24 by 4+10-6 (which is 8) and get 3.

Jan 14, 2014 | Computers & Internet

Prefixes such as milli already reflect the corresponding multiplier or divisor. One milliamp is 1/1000th of an Amp, so 37 milliamps = 0.037 of an Amp.

To keep two sides of an equation the same, you need to perform the same operation on each side. In this case, the equation is 37/1000 = 0.037. The "divide by 1000" part of this equation is included in the word "milliamp", hence 37 milliamps = 0.037 Amps.

Another way of looking at it is that a number remains unchanged if you both divide and multiply it by the same number. In this case, changing to milliamps is dividing by 1000, so you need to multiply by 1000 to keep the result unchanged.

You have actually divided by 1000 twice as a result of using x10^-3 as a multiplier when you should have used x10^3

To keep two sides of an equation the same, you need to perform the same operation on each side. In this case, the equation is 37/1000 = 0.037. The "divide by 1000" part of this equation is included in the word "milliamp", hence 37 milliamps = 0.037 Amps.

Another way of looking at it is that a number remains unchanged if you both divide and multiply it by the same number. In this case, changing to milliamps is dividing by 1000, so you need to multiply by 1000 to keep the result unchanged.

You have actually divided by 1000 twice as a result of using x10^-3 as a multiplier when you should have used x10^3

Nov 26, 2011 | Casio fx-300ES Calculator

That is the correct answer. 60 multiplied by 24 is 1440. 1400 divided by 1440 is a number slightly smaller than 1.

Are you sure the problem isn't 1440/(60*24)?

Are you sure the problem isn't 1440/(60*24)?

Jun 22, 2011 | Texas Instruments TI-83 Plus Calculator

1÷1700 expressed as a decimal is 0.000588235, which is 5.882...×10^-4. [NB not 10^4]

To convert this to a percent, remember that "per cent" means "per 100" which also means "divide by 100". To keep the answer correct, if you are dividing by 100 you must also multiply by 100.

The get the answer in percent, you must therefore multiply the previous answer by 100 to get**0.00588235 percent**. (or 5.882...×10^-2 percent).

To convert this to a percent, remember that "per cent" means "per 100" which also means "divide by 100". To keep the answer correct, if you are dividing by 100 you must also multiply by 100.

The get the answer in percent, you must therefore multiply the previous answer by 100 to get

Mar 30, 2011 | Casio FX83ES Scientific Calculator

Press the keys:

. 5 8 * 1 2 . 0 1 x^-1 * 6 . 0 2 2 2ND [EE] 2 3 ENTER

and you should get 2.9E22. Do you get something different?

* is the multiply key on the right, between divide and subtract.

x^-1 is on the left, below MATH.

EE is the 2ND function of the , key, just above the 7.

Another way to calculate this is:

. 5 8 / 1 2 . 0 1 * 6 . 0 2 2 2ND [EE] 2 3 ENTER

This should give you the same result.

. 5 8 * 1 2 . 0 1 x^-1 * 6 . 0 2 2 2ND [EE] 2 3 ENTER

and you should get 2.9E22. Do you get something different?

* is the multiply key on the right, between divide and subtract.

x^-1 is on the left, below MATH.

EE is the 2ND function of the , key, just above the 7.

Another way to calculate this is:

. 5 8 / 1 2 . 0 1 * 6 . 0 2 2 2ND [EE] 2 3 ENTER

This should give you the same result.

Mar 10, 2010 | Texas Instruments TI-83 Plus Calculator

Hello,

The error comes from the lack of understanding of the meaning of the notation used by the calculator manufacturers.

The [EE] is a "shorthand" notation for**times 10 to the power of **.

To convince you of it try entering

**1[EE]0 [=] this is 1*10^0=1*1=1**

1[EE]1 [=] this is 1*10^1=1*10=10

1[EE]2 [=] this is 1*10^2=1*100=100

When you enter 7.82x10[EE]10

you are calculating

7.82*10*1*10^10=7.82x10^11.

Hope it helps.

The error comes from the lack of understanding of the meaning of the notation used by the calculator manufacturers.

The [EE] is a "shorthand" notation for

To convince you of it try entering

1[EE]1 [=] this is 1*10^1=1*10=10

1[EE]2 [=] this is 1*10^2=1*100=100

When you enter 7.82x10[EE]10

you are calculating

7.82*10*1*10^10=7.82x10^11.

Hope it helps.

Nov 12, 2009 | Texas Instruments TI-30XA Calculator

It would seem to me that the answer was found at a grade 3 or 4 level

If you divide 288 by 4 you get 97. Then the 1 is carried to the 2 leaving 12. 12 divided be 4 is 3 leaving a result of 397.

Second one....

217 divided by 5 is 43.4 or 43 with a remainder of 2.

Leaving 5 divided by 5 equaling 1.

Combining the 1 with the 43 with a remainder of 2 bringing you a total of 143 r2

This as mentioned would be at a grade 3 or 4 calculation with no understanding of how to properly divide.

I hope this helps and gives you the "A" you're looking for.

All the best.

If you divide 288 by 4 you get 97. Then the 1 is carried to the 2 leaving 12. 12 divided be 4 is 3 leaving a result of 397.

Second one....

217 divided by 5 is 43.4 or 43 with a remainder of 2.

Leaving 5 divided by 5 equaling 1.

Combining the 1 with the 43 with a remainder of 2 bringing you a total of 143 r2

This as mentioned would be at a grade 3 or 4 calculation with no understanding of how to properly divide.

I hope this helps and gives you the "A" you're looking for.

All the best.

Sep 16, 2009 | Computers & Internet

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