I had a seizure several years ago that perminnately affect the part of my brian that deals with math... I had a terrible time helping my daughter with math homework. If she brings her textbook home I can reteach myself. But I do not retian the information.

She is multiplying decimals...

example:

8.0

x0.02

Help me please!

# 6 Answers

0.16.. only for you jenn...

12 years ago. Rating: 3 | |

8.0

x0.02

0.160 three digets drop the zero cause it's a non factor..

so...

0.05 x 0.4= .020 or .200

Which would be correct?

Decimal multiplication is always a cumbersome job.

But it is very easy to deal with such kind of decimal format [specially zero's format with monomial one]

Proceed as follows:

1. First multiply the numbers only

2. Notice the decimal point

3. Then, move number of decimal point to the result in "1" backward and you will get your required result

If we see the above problem,

First multiply 8 with 2, then result would be 16

Notice the decimal point, then move 2 steps backward,

then result would be 0.16.

Now you can recall all those information yourself and teach your daughter efficiently.

12 years ago. Rating: 3 | |

Too long ago for me, Jenn. I'm old enough I don't have to know this kind of stuff unless it's a personal emergency....

12 years ago. Rating: 2 | |

HI EVERY NUMBER HAS A DECIMAL POINT AS ITS CALLED

EXAMPLE 1 OR 2 OR 3 SHOULD BE WRITTEN AS 1.0 OR 2.0 OR 3.0 45.0 ETC

THIS IS NUMBERS TO ONE DECIMAL POINT WHEN THEY ARE WRITTEN AS 1.00 OR 2.00 OR 3.00 OR 45.00 THIS IS CALLED TWO DECIMAL POINTS AND MAKES THE NUMBER MORE ACCURATE SO THE MORE DECIMAL POINTS THE MORE ACCURATE THE NUMBER

DECIMAL POINT MEANS 10 PLACES SO IF YOU TAKE NUMBER 1.0 AND YOU MOVE THE DECIMAL POINT TO THE RIGHT IT BECOMES 10.0 OR NUMBER 5.0 AND DO THE SAME

THAT BECOMES 50.0 IF YOU DO THE SAME AGAIN 10.0 BECOMES 100.0 AND 50.0 BECOMES 500.0 AND SO ON

WHEN YOU GET TO NUMBERS LESS THAN 1 ONE THE REVERSE HAPPENS

IF YOU WRITE THE NUMBER 1.0 AS 0.1 THIS MEANS IT IS ONE TENTH OR 1/10

0.2 = 2/10 0.3=3/10 ETC

IF YOU MOVE THE DECIMAL POINT TO THE LEFT ONE MORE PLACE LIKE THIS 0.001 OR 0.002 THIS MEANS 1/100 OR 2/100

THEREFORE YOUR QUESTION 8X0.02 = 8 X 2/100 = 16/100 = 0.16

FROM ABOVE 0.10 =1/100 THEREFORE 16/100 =0.10X16 =0.16

12 years ago. Rating: 2 | |

Jenn if I see you saying you are dumb one more time I am going to put you over my knee and spank you. Don`t get excited I am only joking.

Zenius is ,merely multiply the numbers as you would and other multiplcation then place a decimal point distanced from the right hand side of the answer the number of spaces that the largest decimal point in your original sum.

That is 6.09x5.078= 30.925 ie 3 decimal places back

12 years ago. Rating: 1 | |

Get the line up as if there were no decimal.... How do I know where to put the decimal....

I swear I am not stupid....