When subtracting numbers, the numbers need to be aligned in place value columns. The easiest way to do this is to align the decimal points. If one number has less digits after the decimal point then extra zeros can be added to the end of the number to make it the same length as an empty place value column is the same as one with a zero in it (zero was originally first used to indicate an empty place value column).
So for 2.15 - 2.1 the decimal points need to be aligned:
_____2.15__
_____2.1___
But to make the subtraction easier, adding extra zeros after the 1 of 2.1 to make the 2.1 the same length as the 2.15 (ie upto the hundredths digit) helps:
_____2.15___
_____2.10___
Now you can easily do the subtraction:
_____2.15___
_____2.10___
_____-----____
_____0.05____
_____===____
This trick of appending extra zeros is very useful if the first number has less digits, eg 2.2 - 2.15:
_____2.2_____
_____2.15____
Becomes:
_____2.20____
_____2.15____
Which is easier to do, giving:
_____2.20____
_____2.15____
_____-----_____
_____0.05____
_____===_____
None of the following rules are applicable.
Subtracting a negative is the same as adding the equivalent positive. For example, subtracting minus 10 is the same as adding 10.
(-4)-(-9)=5
Adding is when you add numbers to something and subtracting is when you take them away. When you add you do not always make the number go up for example 5 + (-7)= -2.
Adding a negative number is equivalent to subtracting a positive number. For example, adding -3 is the same as subtracting 3. Subtracting a negative number is equivalent to adding a positive number. For example, subtracting -3 is the same as adding 3. The rule to remember is that when you have a negative sign in front of a number, it actually changes its sign.
None of the following rules are applicable.
I presume this is a question about scientific arithmetic. When adding or subtracting two numbers, with a different number of decimal places, the quantity with the least number of decimal places determines the number of decimal places in the answer. For example, let's say you are adding two masses: .1 grams .11 grams .1grams + .11grams = .21 grams Because .1 only has one decimal place, the answer becomes .2 grams, and we ignore the .01 because it is lost due to a lack of precision. The process of multiplying and dividing is different, as you compare significant digits instead of decimal places instead.
Step 1. Align their decimal places then do the subtraction. Example 1: 1234.567-123.3 1234.567 -123.3 ------------- 1111.267 If the minuend has lesser decimal places, add zeros after the last decimal point so that it will have the same decimal places as the subtrahend. Then do step 1. Example 2: 1234.5 - 123.456 1234.500 -123.456 ------------- 1111.044
Subtracting a negative is the same as adding the equivalent positive. For example, subtracting minus 10 is the same as adding 10.
When subtracting with significant figures, the answer should be rounded to the least number of decimal places of any number in the calculation. For example, if you subtract 3.25 from 8.621, your answer should be rounded to the nearest hundredth as 5.371 to maintain proper significant figures.
align the decimals and subtract as you normally would. make sure after subtracting you bring the decimal down. replace empty space with zeros. for example: 1.340 - 1.3250 will look like this 1.340 - 1.3250 another example: 10.39485 - 9.847 will look like this. 10.39485 - 9.84700 <----see how I added zeros. When your done subtracting, you bring the decimal straight down to your answer. 7.584 - 5.483 _________ 2.101 SORRY, WHEN I POSTED IT MOVED ALL THE NUMBERS AND TRIED TO RE-POST TO GET THEM TO ALIGN
If you want to add numbers in different bases, in this case decimal and binary, or do any other calculation that involves different bases for that matter, you have to convert all numbers to a single system first - for example, all to decimal. Then you can do the operation. It is really up to you in what base you represent the final answer. In this example, you can convert back to binary, for example.
When adding or subtracting numbers, the answer should have the same number of decimal places as the measurement with the fewest decimal places. The final answer should be rounded to the least number of decimal places among the numbers used in the calculation. Only the decimal portion of the number is considered when determining significant figures for addition and subtraction.
Add the result of the subtraction to the number you were subtracting and you should get the number from which you subtracted. example 246.8 - 35.15 = 211.65 To check add 211.65 + 35.15 and see if you get 246.8
computer maths are the operations of adding or subtracting binary, octal or hexadecimal numbers. These operations are normally carried out while programming in assembly language. A very simple subtraction example: Take a binary number of say 1111 (equivalent to 15 in decimal) minus 0010 (equivalent to 2 in decimal) results in 1101 (equivalent to 13 in decimal).
(-4)-(-9)=5
Okay. This If You Are Looking For A Example Of Terminating And Repeating Decimal You Came To The Right Place :] Example For Terminating Decimal 1/7= 0.142857 Example For Repeating Decimal 1/3= 0.33..