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What are the rules in adding and subtracting significant figure and scientific notation?
Wiki User
∙ 12y ago
you take the last digit in the first one and add/subtract it to the last digit in the second one and that is your answer
Wiki User
∙ 12y ago
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What is the disadvantage of using scientific notation?
If you are adding or subtracting two numbers in scientific notation, you must rewrite one of the numbers to the same power of ten as the other, before performing the addition (or subtraction).
When adding or subtracting numbers written in scientific notation the exponents must be the?
Same.
When subtracting or adding numbers in scientific notation why do the exponents need to be the same?
This is effectively the same as lining up the decimal points when adding or subtracting ordinary decimal fractions.
Why do you need to rewrite the given scientific notation in the same power of 10?
If you are adding or subtracting two numbers in scientific notation the exponents must be the same before adding the coefficients. This is similar to 'like terms' in algebraic expressions. You can't add 5x3 and 3x2 because the exponents are not the same.
What is the rule for significant figures when adding or subtracting decimals?
When adding and/or subtracting, your answer can only show as many decimal places as the measurement having the fewest number in the decimal places.
Rules in adding or subtracting scientific notation?
- 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.
What is the disadvantage of using scientific notation?
If you are adding or subtracting two numbers in scientific notation, you must rewrite one of the numbers to the same power of ten as the other, before performing the addition (or subtraction).
When adding or subtracting numbers written in scientific notation the exponents must be the?
Same.
When subtracting or adding numbers in scientific notation why do the exponents need to be the same?
This is effectively the same as lining up the decimal points when adding or subtracting ordinary decimal fractions.
Does the negative rule for exponents using scientific notation apply to adding subtracting dividing and multiplying?
Yes, it does.
What must each number have when adding and subtracting scientific numbers?
same number of significant digits
What is the disadvantage of writing in scientific notation?
If you are adding or subtracting two numbers in scientific notation, you must rewrite one of the numbers to the same power of ten as the other, before performing the addition (or subtraction).
Why do you need to rewrite the given scientific notation in the same power of 10?
If you are adding or subtracting two numbers in scientific notation the exponents must be the same before adding the coefficients. This is similar to 'like terms' in algebraic expressions. You can't add 5x3 and 3x2 because the exponents are not the same.
What is the rule for significant figures when adding or subtracting decimals?
When adding and/or subtracting, your answer can only show as many decimal places as the measurement having the fewest number in the decimal places.
What statement describes why scientific notation is useful?
It makes calculations with very large and small numbers easier by allowing the 10-factors to be multiplied or divided by adding or subtracting their indices. (The principle of logarithms.)
What is the benefit of writing number in scientific notation?
Ask yourself. Would you rather write this out in long hand? 234,000,000,000,000,000,000 ----------------------------------- Or this? 2.34 X 1020 -------------- Let alone adding, subtracting, multiplying and dividing the first long number.
How do you decide how many significant figures the answer should have when you are adding and subtracting?
The least number of significant figures in any number of the problem determines the number of significant figures in the answer.
