Simplify Expressions
The Commutative and Associative properties work with which operations?
Addition and Multiplication
If the temperature changes -2.6 degrees each hour for 8.2 hours, how much does the total temperature change?
-21.32 degrees
Divide and simplify your answer.
3/4 \div 1/2
3/4 \div 1/2 = 3/4 \cdot 2/1 = 6/4 = 3/2
0.16
-9 - 15
-24
Simplify: |-8+6| + (62 - 10/5)
36
A cupcake recipe uses 2.5 cups of flour for 12 cupcakes. How much flour does she need for a recipe that serves 24?
5 cups
Divide and simplify your answer.
5/6 \div 3/4
5/6 \div 3/4 = 5/6 \cdot 4/3 = 20/18 = 10/9 = 1 1/9
Multiply: -5(-0.5)
2.5
5 - (-7)
12
(7^2 - 1) div 4 + 2
14
Ms. Pena, the art teacher, has 49.6 pound of clay. If she gives every student 1.6 pounds of clay and has none left, how many students are in her class?
31 students
Divide and simplify your answer.
1 1/3 \div 1 1/2
4/3 \div 3/2 = 4/3 \cdot 2/3 = 8/9
Multiply: 0.03(1.2)
0.036
8(-9)
-72
-3 \cdot 2 \div (-2-4)
-6 div -6 = 1
Tina worked 42.2 hours last week. If she is paid $15.65 an hour, what was her total pay for the week?
$660.43
Divide and simplify your answer.
1.3 \div 0.05
26
Multiply: (0.08)(4.7)
0.376
(-77)/-7
11
36+16 \cdot (1/4)-(50/25)^2
36
Carla wants to buy pizza for her and her friends. She has $9.50 in her pocket. One slice costs $1.25. How many slices can she buy?
7
Divide.
1.75 \div 0.2
8.75
Multiply: (2.34)(2.7)
6.318
-14(-8) - 100
12