Order of Operations
What is the acronym to remember the Order of Operations?
PEMDAS
Valerie earns $24 per hour. Write the expression that can be used to show how much money she earned in 7 hours?
(7 x 20) + (7 x 4)
24 x 13
312
True or False:
A) 170 is 1/10 of 17.
B) 660 is 10 times as much as 600.
A) False
B) False
Which equations show the Identity Property?
4+0=4
4 x (3+1)
15 x 1=15
(3+4) + 2 = 3 + (4 + 2)
4+0=4
15 x 1=15
What part of an expression do we solve first?
Parentheses
Carmine buys 8 plates for $1 each. He also buys 4 bowls. Each bowl costs twice as much as each plate. The store is having a sale that gives Carmine $3 off the bowls. Which numerical expression shows how much he spent?
A. (8x1) + [(4x16)-3]
B. (8x1) + [4x(16-3)]
C. (8x1) + [(4x2)-3]
D. (8x4) + [(4x2)-3]
C. (8x1) + [(4x2)-3]
Paula collected 75 stickers. She shares her stickers equally with 5 of her friends. How many stickers will each friend get?
15 stickers
True or False:
A) 900 is 1/10 of 9,000.
B) 4,400 is 10 times as much as 440.
A) True
B) True
Which equations show the Commutative Property?
(1+2)+3=1+(2+3)
4 x 1 x 6=6 x 1 x 4
7 + 11 + 2= 2 + 11 + 7
6 x (5 + 1)= (6x5) + (6x1)
4 x 1 x 6=6 x 1 x 4
7 + 11 + 2=2 + 11 + 7
Evaluate the expression:
15-(37+8) / 3
0
An adult elephant eats about 300 pounds of food each day. Write an expression to represent the number of pounds of food a herd of 12 elephants eats in 5 days.
5 x (300x12)
It is 3,452 miles round trip to Craig's aunt's house. If he travels to her house 3 times this year, how many miles did he travel in all?
10,356 miles
(7x100,000) + (5x100) + (6x10) + (2x1)
OR
700,000 + 500 + 60 + 2
Which equations show the Associative Property?
7 x 1=7
4 x (6 + 3)=(4x6) + (4x3)
(7x6)x1=7x(6x1)
12+(3+4)=(12+3)+4
(7x6)x1=7x(6x1)
12+(3+4)=(12+3)+4
Evaluate the expression:
2+ (65+7) x 3
218
Ariana buys 5 boxes of granola bars. Each box contains 12 granola bars. Arianna eats 4 bars. Write an expression to show how many granola bars are left.
(12x5) - 4
There are 8 teachers going to the science mueseum. If each teacher pays $15 to get inside, how much did the teachers pay?
$120
Carrie has 140 coins. She has 10 times as many coins as she had last month. How many coins did she have last month?
14 coins
Use the Distributive Property to solve this expression.
5 x (8+9)
(5x8)+(5x9) =
40 + 45=
85
(5 x 2)/5 + 8
10
Miss Stearns buys 3 cases of water. Each case of water contains 10 bottles. Miss Stearns drinks 4 bottles of water. Write an expression to show how many bottles of water are left.
(3x10) - 4
If Jeannie eats 1,840 calories a day, how many calories will she have eaten after 182 days?
334,880 calories
103=
104=
6 x 103=
1,000
10,000
6,000
Use the Distributive Property to fill in the blanks.
18x8=(8x____) + (______x______)
(8x10) + (8x8)