Math Worksheets

Archive for July, 2007

Question: Can someone help me with this problem? math?

Hey everyone, so I’m doing a worksheet for math and i seem to be getting most of it except this problem is giving me a hard time. I’m sure it’s easier than what i am making it out to be, but any help would be appreciated!

(1/4) all of that ^x+1 = 16^x

Thanks!

Answer: Remember this property of logarithms.
log(a^x) = xloga

Solution:
(1/4)^(x + 1) = 16^x
4^(-1(x + 1)) = 4^(2x)
4^(-x – 1) = 4^(2x)
log4^(-x – 1) = log4^(2x)
(-x – 1)log4 = 2xlog4
-x – 1 = 2x
-1 = 2x + x
-1 = 3x
-1/3 = x (Answer)

Hope this helps!

UNICEF: Palestinian children face educational challenges

Use our free Subtraction worksheets to practice doing Subtraction problems. Below is an example of how to solve Subtraction problems.

Let’s subtract a big number this time. Let’s subtract 38 from 413. Remember that the first step of easy Subtraction is to write the numbers in columns.

Working from the right hand column to the left, the most right hand column is three minus eight. Since three is less than 8, we need to borrow from the middle column. Borrowing one from the middle column leaves the middle column with zero and adds 10 to the right column.

The right hand column becomes 13 minus 8 giving 5. This concludes the Subtraction of the right hand column so we move to the middle column. The middle column, after losing one to the right column, becomes zero minus 3. Again, zero is less than three so we borrow from the left column.

The middle column becomes 10 minus 3 which is 7. That leaves the first column as 3 giving the final solution to the Subtraction problem of 375. That’s it. You can use this method to solve any Subtraction problems.

Question: Where can i find Free Math Worksheets?like for every math subject in elementary school?

Answer: Katy,

EdHelper is good, but they also charge a subscription free of $20.

Try http://www.teach-nology.com . They’ve got lots of free worksheets there. All grade levels.

Also try: http://www.superteacherworksheets.com
There’s lots of word problems, Multiplication, and other math stuff. Mostly at a an upper-elementary (3rd – 5th grade) level.

Good luck.

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