Weekend Assignment 11/6

Hi everyone! Just wanted to take a minute to recap what we've learned so far in Chapter 4 before you complete your questions.

 We first discussed the method for multiplying a decimal by a whole number. *Remember, you should not line up the decimals when you are multiplying - only when you're adding or subtracting.*

 1) Set the problem up as though you were dealing with plain ol' whole numbers.
 2) Solve (ignore the decimals for now - remember, we're pretending they are both whole numbers).
 3) To place the decimal in your answer:
     First, count how many numbers after the decimal in the original problem.
     Then, going from right to left in your answer, count that many spaces over and put your decimal there.

 Example:

       4.23   ---> There are two numbers after the decimal here.
    x      6
     2538    ---> Now, going from right to left, put the decimal two places from the end.

 Answer: 25.38

 Today we talked about multiplying one decimal by another. *Remember, don't line up the decimals since we're multiplying!*

 This method is exactly the same as the method for multiplying a decimal by a whole number.

 1) Set the problem up.
 2) Solve just like they're whole numbers (ignore the decimal).
 3)  How many numbers (TOTAL) are there after all the decimals in your problem? Count them up, and then
      place the decimal that many places over in your answer.

 Example:

      3.65   ---> There are two numbers after the decimal here.
x     2.5   ---> There is one number after the decimal here.
   9125    ---> Now, going from right to left, put the decimal three places from the end, since we counted
                       3 numbers total after decimal points in our problem.

 Answer: 9.125

Here are your 9 questions for the weekend (remember, you must show your work for credit!):

1) 2.34 x 9.3

2) 0.45 x 2.9

3) 1.75 x 4.6

4) 2.22 x 9.4

5) 7.97 x 6.6

6) 6.35 1.1

7) 4.67 x 7.8

8) 8.13 x 3.6

9) 3.87 x 2.1