Find the result of this calculation: (This is an example of a randomised question - the next time you use this example you will probably be given a different calculation to do):

$\var{a}\times\var{b}+\var{c}=\;$Expected answer:

You have to input a whole number - it could be in decimal form. If the answer was $2$ then you could input 2 or 2.0 - try both forms.

Sometimes I could force you to enter a whole number not in decimal form. But this should be no problem as you will be warned, as below.

Enter the result of this calculation, but enter as a whole number and not as a decimal.

$\var{a}\times\var{b}+\var{c}=\;$interpreted as

$\displaystyle{}$

Expected answer:interpreted as

$\displaystyle{56}$

Enter the correct answer as a decimal i.e. in the form 2.0 and see what happens:

Decimals

Many calculations will result in numbers which need to be entered in decimal notation.

I will always ask for the decimal to be input to a certain number of decimal places. 

Often there is a small tolerance built in so that if you get the result wrong by 1 in the last decimal place then it will be marked as correct. 

But accuracy is important, so make sure that you get the calculations correct.

For example: 

Input $\displaystyle \frac{\var{a1}}{\var{b1}}$ as a decimal correct to 2 decimal places here: Expected answer:

Try entering the correct value and submitting. Then vary the last decimal place by 1 either way and submitting, and then the last place by 2 either way and submitting.

Try putting in the fraction as it is (i.e. $\var{a1}/\var{b1}$ ) and see what happens. 

The system gives an error message as what you have put in is not a direct representation of a number. But you can always re-enter.

So be careful - always check after submitting your answer that the input field contains the answer that you thought you entered.

Fractions

You will find that some questions may ask you to input fractions and not decimals.

For example:

Find the following sum as a fraction:

$\displaystyle \frac{1}{\var{a1}}+\frac{1}{\var{b1}}=\;$interpreted as

$\displaystyle{}$

Expected answer:interpreted as

$\displaystyle{\frac{ 17 }{ 70 }}$

(input as a fraction and not a decimal)

You input the answer as 17/70

Try inputting the decimal version of this to as many places as you like (for example given by the calculator on the PC - you can copy this from the calculator and paste into the input field) and see what happens.