Order of Operations
Which would you solve first?
(5 + 2) - 3
What is (5 + 2)?
How would you write "7 more than a number p"
What is p + 7 (or 7 + p)?
Solve.
(5 x 3) + 3
What is 18?
(5 x 3) + 3
15 + 3
18
Look at chart #1.
Find the value of n and fill in the missing box.
What is...?
n = 15
blank = 22
Which would you solve first?
72 + 6
What is 72?
Solve.
(2 + 4) - (3 - 1)
What is 4?
(2 + 4) - (3 - 1)
(6) - (2)
4
How would you write "5 times a number w"
What is 5w or 5 x w (w x 5)?
Look at chart #2.
Find the value of x and fill in the missing box.
What is...?
x = 66
blank = 79
What would you solve first?
(5 x 3) + (10 ÷ 2)
What is (5 x 3)?
Work from left to right
How would you write "10 less than the number y"
What is y - 10?
Solve.
(5 x 4) x (8 ÷ 2)
What is 80?
(5 x 4) x (8 ÷ 2)
(20) x (8 ÷ 2)
(20) x (4)
80
Look at chart #3.
Find the value of ___ x n and fill in the missing box.
What is...?
__ x n = 3
blank = 27
What would you solve first?
2 + 4 ÷ 2
What is 4 ÷ 2?
Solve.
42 + (5 + 22)
What is 25?
42 + (5 + 22)
42 + (5 + 4)
42 + 9
16 + 9
25
How would you write "divide k by 2"
What is k ÷ 2?
Bonus point: Why can't you write it 2 ÷ k?
Look at chart #4.
Find the value of s ÷ ___ and fill in the missing box.
What is...?
s ÷ ___ = 5
blank = 7
What would you solve first?
3 + 7 x 63 ÷ 2
What is 63
How would you write "subtract m from 20"
What is 20 - m?
Bonus point: why is it not m - 20?
Solve.
(16 ÷ 4) x (52 ÷ 5)
What is 20?
(16 ÷ 4) x (52 ÷ 5)
(16 ÷ 4) x (25 ÷ 5)
(4) x (5)
20