Evaluating Expressions
3 + 6 x 2
15
Find the difference of 29 and 13, and then divide by 2.
(29 - 13) / 2
Write a number sentence to compare the expressions using >, < , or =.
7 x (43 - 18)
(43 - 18)
7 x (43 - 18) > (43 - 18)
Hilary buys 5 bookmarks for $1 each and 2 books for $10 each. How much does Hilary pay in total?
5 x 1 + 2 x 10
$25
What is the acronym that you can use to remember the order of operations?
What phrase can help you remember it?
P.E.M.D.A.S
Please Excuse My Dear Aunt Sally
12 x (8 - 5) - 7
29
Multiply 1.2 by 5, and then subtract 0.7
1.2 x 5 - 0.7
Write a number sentence to compare the expressions using >, < , or =.
(144 / 16) - 9
(144 / 16)
(144 / 16) - 9 < (144 / 16)
Robert has $125 for groceries. The produce he buys costs $60 but when he gets to the cashier, he realizes all produce is 50% off. How much money does Robert have leftover?
125 - (60 / 2)
$95
**DOUBLE JEOPARDY**
What are the three types of parentheses in order?
What do they look like?
Parenthesis ( )
Brackets [ ]
Braces { }
7 x [5 + (3 / 1)]
56
**DOUBLE JEOPARDY**
Add 2 squared (to the power of 2) to the product of 10 and 3.
10 x 3 + 2^2
Write a number sentence to compare the expressions using >, < , or =.
(4 + 0.5 + 3) x 2
2 x (0.5 + 3 + 4)
(4 + 0.5 + 3) x 2 = 2 x (0.5 + 3 + 4)
Ken has 90 pencils for his classes of students. He equally separates all of his pencils into 3 classes. In each class, there are 5 tables that each get the same number of pencils. How many pencils does each table get?
90 / 3 / 5
6 pencils
What is the difference between an expression and an equation?
An expression is a number sentence without =
An equation is a number sentence with = and a solution
20 / 5 + (13 - 6) x 2
18
Add the quotient of 120 and 3 to the product of 15 and 10.
(120 / 3) + (15 x 10)
Write a number sentence to compare the expressions using >, < , or =.
700 - (13 x 7) + 50
700 - (12 x 7) + 50
700 - (13 x 7) + 50 < 700 - (12 x 7) + 50
Melanie had $25 and withdrew $200 from his bank account. He bought pants for $24, 2 shirts for $10 each, and 3 pairs of shoes for $24 each. How much money does Melanie have leftover?
(25 + 200) - 24 - (2 x 10) - (3 x 24)
$109
Insert parenthesis to make the equation true:
8 + 12 / 5 - 3 = 14
8 + 12 / (5 - 3) = 14
[10 x (11 - 36 / 4)] + 7
27
Multiply the sum of 13 and 15 to 2. Then divide the product by 4 to the power of 2.
[(13 + 15) x 2] / 4^2
(13 + 15) x 2 / 4^2
Write a number sentence to compare the expressions using >, < , or =.
(397 x 12) - 132
(397 x 12) - 123
(397 x 12) - 132 < (397 x 12) - 123
John invests $90 and within a day, his money triples. For 2 next days, he gains $32 each day. After that, for the next 4 days, he loses $25 each day. How much does John end up with?
(90 x 3) + (2 x 32) - (4 x 25)
$234
Insert 2 sets of parentheses to make the equation true:
15 - 2 x 4 + 3 -11 = 80
(15 - 2) x (4 + 3) -11 = 80