Properties
The commutative property of multiplication shows that . . .
it doesn't matter what order you multiply numbers
What does is mean in a sentence that becomes an equation?
=
Is this number in Scientific Notation format? Yes or no:
3 x 42
No.
Is the following product positive or negative?
(-2)(-2)(-3)(-4)(-8)
negative
(3)(4)
12
The associative property shows that . . .
If you are adding or multiplying numbers, you can choose to add some together before others to make it easier.
What does "of" mean in a sentence that becomes an equation?
x (times)
Put the following number into scientific notation:
3200
3.2 x 103
pq - p if p = 4 and q = 9
27
(-5)(-4)
20
What two numbers should I group together here? (Associative Property)
23 + 87 + 77 + 13
either 23 & 77 OR 87 and 13
Twenty percent of what number is 40?
200
Put the following number into scientific notation:
.000009
9 x 10-6
the w root of x + xy if w = 2, x =49, and y = 2
2408
-5(2+5-5)-[(2+4) * 3]
-28
The identity property of multiplication is shown in which of the following:
x + 0 = x OR x * 1 = x OR x -x = 0
x * 1 = x
Two hundred forty percent of 90 is what number?
216
Multiply:
(5 x 102)(1 x 10-1)
5 x 10 OR 5 x 101
Solve for x:
-9x = -81
x = 9
2(5 + 3 - 4) - [(5 + 5) * 5]
-42
What is Mrs. Yaceczko's favorite color?
Green.
What percent of 20 is 110?
550%
Multiply:
(3 x 106)(3 x 109) =
9 x 1015
(3)(-4)
-12
The ratio of teachers to students was 2 to 15. If there were 8 teachers, how many students were there? (set up equivalent fractions & solve)
60 students