-You must memorize
-To add 2 integers with different signs, find the difference of their absolute value
-To subtract an integer, add it's opposite
- when adding or subtracting in scientific notation, you must express the numbers as the same power of 10. This will often involve changing the decimal place of the coefficient.
adding and subtracting integers is when you add and minus 2 numbers
Subtracting a negative is the same as adding the equivalent positive. For example, subtracting minus 10 is the same as adding 10.
Ensure that the denominators are the same when adding or subtracting fractions.
Integers are whole numbers, both positive and negative. Therefore, adding and subtracting integers would be adding and subtracting whole numbers. Examples: 8+2 -8+2 8-2 -8-2
When subtracting negative numbers change the subtraction sign to a plus and change the second number (which would appear to be positive) to a negative. ex. -14 - 7=?/-14 + -7= -21 When adding negative numbers just add them as they appear. ex. -2 + -5= -7
You subtract a polynomial by adding its additive inverse. For example, subtracting (x - y) is the same as adding (-x + y). Alternately, you can simply subtract similar terms - that is, subtract the coefficients (the numbers) for terms that have the same combination of variables.
Subtracting its additive inverse. (In principle, this is valid for adding positive numbers as well.)
They aren't. The rules are the same as those for adding/subtracting or multiplying integers. Just be careful of the decimal point's location.
Adding decimal same as adding whole numbers
Quotient is the number you get when dividing two numbers.
Subtracting negative numbers is exactly the same as adding the positive number.
This is effectively the same as lining up the decimal points when adding or subtracting ordinary decimal fractions.
None of the following rules are applicable.
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to subtrct integers ,rewrite as adding opposites and use the rules for addtion of integers..
Either a calculator or an abacus. If not, your fingers.