Multiplication Steps
The first step in multiplying decimals is to do what?
Remove the decimals
3.46 x 4.8
16.608
8.348 divide 4
2.087
6366 divide .4
15915
Ask yourself if the divisor is what kind of number?
Whole
When multiply by a 2 digit number on the bottom, what do you need to do before multiplying the 2nd digit (the second row)?
Add a zero
12.8 x 6.9
88.32
9.616 divide 4
2.404
3312 divide .9
3680
If the divisor is a whole number, then you will ___________ like normal.
Divide
When we multiply decimals we count all the ________ ________ in the original problem.
2.58 x 13.47
34.7526
1237.85 divide 5
247.57
7746 divide .8
9682.5
If the divisor is a decimal you have to _____________________________ before you start dividing.
Move the decimal to the end or make it a whole number.
Add the decimals back in starting at the __________ and working to the ___________.
Right, Left
3.1 x 54.08
167.648
654.12 divide 3
218.04
548.2 divide .4
1370.5
The steps in division are D M S C B. What mathematical terms do these letters stand for?
Divide
Multiply
Subtract
Compare
Bring Down
The decimal isn't place in the answer until when?
3 x 654.78
1964.34
6548.1 divide 8
818.5125
84.32 divide .08
1054
If you move the decimal in the divisor, what do you have to do to the decimal in the dividend? Be specific
You have to move the decimal the SAME number of places that the decimal moved in the divisor.