-9 + 9 =
-5 - 12 =
-17
The identity property of addition states that the sum of a number and zero is ______.
that number
Triangle A is enlarged to make triangle B.
Find the scale factor.
Scale factor: 4
Find the constant of proportionality from the table.

3
-11 + (-17) =
-28
3 - 14 =
-11
5 + 7 x 3
26
A photo is enlarged with a scale factor of 3. If the original dimension are 4in x 6in, what are the dimensions of the scaled copy?
12 in x 18 in
Write an equation that will relate the price to the number of pieces of chicken.

y=2x
11 + (-7) =
4
6 - (-11) =
17
9 + 5 = 5 + 9 is an example of what property?
Commutative property of addition
Rectangle ABCD is enlarged to make rectangle EFGH.
Find the scale factor.
Scale factor: 2.5
Find the constant of proportionality from the graph.
50
-12 + 5 =
-7
-3 - (-11) =
8
4 x (7 - 11) =
-16
A drawing is reduced with a scale factor of 1/4. If the original dimension are 10in x 8in, what are the dimensions of the scaled copy?
2.5 in x 2 in
Write an equation that will relate the water used to the time in hours.
y=5x
-19 + 27 =
8
-21 - (-11) =
-10
(9 + 3) + 8 = 9 + (3 + 8) is an example of what property?
Associative property of addition
A 9cm x 21cm rectangle has been reduced with a scale factor of 1/3. What is the scaled copy dimensions?
3 cm x 7 cm
What is the cost for 8 pounds of apples?

$24 for 8 pounds of apples.