Decimal Multiplication and Division
Fraction Multiplication and Division
All about Decimals
All about Fractions
Increase or Decrease
100

When you multiply decimals, how do you know where the decimal goes in the answer?

Count the number of place values used in the problem.

100

How do you multiply fractions?

Multiply straight across (numerator x numerator and denominator times denominator)

100

True or False

You ALWAYS line up the decimals when multiplying.

False

100

 What is always the final step of multiplying fractions?

Simplify!

100

Increase or Decrease?

1*15/16

Decrease

200

788.68 divided by 2

394.34

200

6/12   divided by    3/4 =   

2/3

200

you can not multiply percent's so you must change it to a _______ ?

What is decimal

200

Simplify 12/18

6/9   or 2/3

200

Increase or Decrease?

3*5/4

Increase

300

15.2 x 5.22

79.344

300

What should we do when we finish multiplying or dividing the fractions?

SIMPLIFY!!!!

300

5.12 X .003

What is .01536

300

Change 13/5 into a mixed number.

2 3/5

300

What type of fraction can you multiply by 1 and it will ALWAYS equal greater than 1?

improper or mixed number

400

86.52 divided by 4.2

20.6

400

11/5  x   7/2  =

77/10   or 7   7/10

400

182.76 divided by 4

What is 45.69

400

Turn 5 1/4 into an improper fraction

21/4

400

Increase or Decrease?

3/4*4/5

Decrease

500

What needs to be changed in order to divide decimals?

The divisor needs to become a whole number

500

What is the first thing you should do when you are multiplying fractions?

Make all numbers into fractions (regular and improper)

500

You must do the same thing to the inside of the division sign as the outside when you _______ ?

What is divide decimals

500

how do you multiply mixed numbers?

change the mixed numbers to improper fractions. (Use MAD)

500

Increase or Decrease?

1.125*8/3

increase

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