Decimal Multiplication and Division
Fraction Multiplication and Division
All about Decimals
All about Fractions
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

you move the decimal to the left when you _________ ?

What is multiplying decimals

100

when multiplying or dividing fractions this step makes it a lot easier

What is cross simplifying

200

What needs to be changed in order to divide decimals?

The divisor needs to become a whole number

200

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

Cross Cancel if you can

200

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

What is divide decimals

200

how do you multiply mixed numbers?

change the mixed numbers to improper fractions. (What is called the horseshoe method)

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

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

500

788.68 divided by 2

394.34

500

6/12   divided by    3/4 =   

2/3

500

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

What is decimal

500

Simplify 12/18

6/9   or 2/3

M
e
n
u