Multiplication Review
Anything multiplied by zero =
zero
4 x 6 =
24
3.1 x 4 =
= 12.4
3 x (1/2) =
= 1 1/2
A negative times a positive number =
Anything multiplied by one =
The number it was multiplied by.
12 x 7 =
84
-5.7 x (-3) =
= 17.1
-4 x (-3/4) =
= 3
True or False: Do fractions also represent division?
TRUE
A positive times a positive number =
A positive.
-9 x -4 =
36
-4.3 x 9 =
= -38.7
= -9/20
Do you keep, change, flip when multiplying or dividing fractions???
A negative times a negative number =
A positive.
-8 x 6 =
= -48
12 x .5 =
= 6
(-3/5) (7/9) =
= -0.46666666
0/-7
0
A positive times a negative number =
A negative number.
(-32 x 3) (3) =
= -288
-14 x .75
= -10.5
(400 x 2) (-3/4) =
= -600
= -96