I have two questions for math.
How do I add/subtract an integer
Please give me full notes, or webpage please.
Also, my teacher said 10-20E (Problems in book we have to do)
Is that evens? because the odd answers are in the back of the text book
Thanks,
These sites have great explanations of adding and subtracting integers.
http://www.mathgoodies.com/lessons/vol5/addition.html
http://www.mathgoodies.com/lessons/vol5/subtraction.html
The assignments probably are only for the even numbered problems because of the "E" after the numbers.
Of course, it wouldn't hurt to do all of the problems -- especially since you can check your answers to the odd-numbered problems.
Thanks Ms. Sue you help with everything!!!
You're welcome, Dean.
6.7 x 10 to the 4th power
7.6 x 10 to the 4th power
8.9 x 10 to the 3rd power
9.8 x 10 to the -3rd power
put in order from least to greatest
how do you find the interest and balance of the account.
($278) at 8% for 9 months?
Change percent to a decimal
=0.08x278x9
=200.16
Sure! I can help you with both of your questions.
1. How to Add/Subtract an Integer:
To add or subtract integers, you need to understand the concept of positive and negative numbers. Let's start with addition:
- Adding two positive numbers: When you have two positive numbers, you simply add them together. For example, 3 + 5 = 8.
- Adding a positive and a negative number: If you're adding a positive number and a negative number, you can think of it as subtraction. Subtract the absolute value (ignore the sign) of the smaller number from the absolute value of the larger number and give the result the same sign as the larger number. For example, 3 + (-5) would be equal to 3 - 5 = -2.
- Adding two negative numbers: When you have two negative numbers, you can think of it as adding their absolute values and giving the result a negative sign. For example, (-3) + (-5) = -8.
The rules for subtracting integers are closely related to addition:
- Subtracting a positive number: This is the same as adding its opposite (negative). For example, 7 - 3 can be thought of as 7 + (-3) = 4.
- Subtracting a negative number: This is the same as adding its opposite (positive). For example, 7 - (-3) is equivalent to 7 + 3 = 10.
To get a more comprehensive understanding of adding and subtracting integers, you can visit the Khan Academy website. They have helpful lessons and practice problems: https://www.khanacademy.org/math/arithmetic/arith-review-add-subtract
2. 10-20E Problems:
The notation "10-20E" in your textbook means that you are assigned to do problems number 10 through 20, but only the even-numbered problems (E) are expected to be completed. The odd-numbered problems likely have answers in the back of the textbook for you to check your work.
I hope this helps! If you have any more questions, feel free to ask.