Multiply and Divide Decimals

Multiplication Steps

100

The first step in multiplying decimals is to do what?

Remove the decimals

200

What algorithm do you use to multiply decimals?

Standard

300

When we multiply decimals we count all the digits ________ the decimals.

Past

400

Add the decimals back in starting at the __________ and working to the ___________. 

Right, Left

500

Before we can multiply, we have to __________ the problem.

Stack

Multiply Decimals

100

3.46 x 4.8

16.608

200

12.8 x 6.9

88.32

300

2.58 x 13.47

34.7526

400

3.1 x 54.08

167.648

500

3 x 654.78

1964.34

Divide-Whole Number Divisors

100

8.348 divide 4

2.087

200

9.616 divide 4

2.404

300

1237.85 divide 5

247.57

400

654.12 divide 3

218.04

500

6548.1 divide 8

818.5125

Divide-Divisors with Decimals

100

6366 divide .4

15915

200

3312 divide .9

3680

300

7746 divide .8

9682.5

400

548.2 divide .4

1370.5

500

84.32 divide .08

1054

Dividing Decimals Steps

100

Ask yourself if the divisor is what kind of number?

Whole

200

If the divisor is a whole number, then you will ___________ like normal.

Divide

300

If the divisor is a decimal you will multiply by 

Powers of Ten.

400

The steps in division are D M S B R. What mathematical terms do these letters stand for?

Divide

Multiply

Subtract

Bring Down

Repeat/Remainder

500

The steps in division are D M S B R. What OTHER terms do these letters stand for?

Dad

Mom

Sister

Brother

Rover