 # Chapter 7 Lesson 2 Reteach

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Name
Date
Lesson 2
Reteach
Order of Operations
A mnemonic device (pronounced “neh-mon-ik”) is a memory aid.
Common mnemonics are often verbal, something such as a very short
poem or phrase used to help a person remember something.
a
r
e
n
t
h
e
s
e
s
Excuse
x
p
o
n
e
n
t
s
My
u
l
t
i
p
l
y
Dear
i
v
i
d
e
Aunt
d
d
Sally
u
b
t
r
a
c
t
Find the value of the expression.
(2 + 3) + 3 2 × 2 - 12 ÷ 3
Add 2 and 3 that are in the parentheses.
5 + 9 × 2 - 12 ÷ 3
Square 3.
5 + 18 - 4
19
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5 + 3 2 × 2 - 12 ÷ 3
Multiply 9 by 2. Then divide 12 by 3.
Add 5 and 18. Then subtract 4 from 23.
Evaluate each expression.
1. (36 − 10) + (5 × 2 2)
2. 6 × (9 2 − 4)
3. 7 × (3 + 9) =
4. (12 × 3) − (3 × 7) =
5. (3 2 × 4) + (8 − 5) =
6. (100 + 10) × (6 − 3) =
7. 36 × (10 − 3) =
8. 5 × 2 + 4 3 =
9. 36 ÷ (9 − 5) =
54
10. (25 − 2 3) × (6 + 16) =
Grade 5 • Chapter 7 Expressions and Patterns
P rinter P DF
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