Podcast
Questions and Answers
What is the value of E, when E = (-5.2) + (-7.1)?
What is the value of E, when E = (-5.2) + (-7.1)?
- -8.4
- -12.3 (correct)
- -10.5
- -13.3
What result is obtained when calculating F = (-4.1) – (-6.5) + (-5.2)?
What result is obtained when calculating F = (-4.1) – (-6.5) + (-5.2)?
- -5.2
- -4.8
- -2.8
- -3.6 (correct)
If G = (+11.1) – (+19.2), what is the computed value of G?
If G = (+11.1) – (+19.2), what is the computed value of G?
- -12.1
- 8.1
- 7.1
- -8.1 (correct)
What is the result of the expression (-15) + (+72) + (+8) + (-35) + (+63)?
What is the result of the expression (-15) + (+72) + (+8) + (-35) + (+63)?
What is the final computed value of the expression -14.5 + (-4.5) – (-16) + 8.5?
What is the final computed value of the expression -14.5 + (-4.5) – (-16) + 8.5?
Flashcards
Adding signed numbers with the same sign
Adding signed numbers with the same sign
When adding two numbers with the same sign (both positive or both negative), add their absolute values and keep the same sign.
Adding signed numbers with different signs
Adding signed numbers with different signs
When adding two numbers with different signs (one positive, one negative), find the difference between their absolute values and give the sign of the number with the larger absolute value.
Subtracting Signed Numbers
Subtracting Signed Numbers
To subtract a signed number, add its opposite. The opposite of a positive number is negative, and the opposite of a negative number is positive.
Order of operations (PEMDAS)
Order of operations (PEMDAS)
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Absolute value
Absolute value
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Study Notes
Signed Number Calculations
- Calculate expressions using the best method for addition and subtraction of signed numbers.
- Follow the rules for adding and subtracting positive and negative numbers
- Combine like terms (positive with positive, negative with negative)
Ordering Numbers
- Calculate the values of E, F, and G.
- E = (-5.2) + (-7.1) = -12.3
- F = (-4.1) - (-6.5) + (-5.2) = 2.4 - 5.2 = -2.8
- G = (11.1) - (19.2) = -8.1
- Arrange the values E, F, and G in decreasing order: 11.1, -4.1, -5.2
- Important: Follow the proper order of operations to calculate the values.
Numerical Expressions
- Calculate the following numerical expressions using the correct order of operations.
- Show your work to receive full credit.
- Simplify and solve each problem by step-by-step calculation.
- Consider parentheses first in each expression.
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Description
Test your skills on calculating signed numbers, including addition and subtraction of positive and negative values. Follow the rules for combining like terms and applying the order of operations to simplify numerical expressions. Show your work for complete understanding!