Unit 2 Test Review
Presentation
•
Mathematics
•
5th - 6th Grade
•
Medium
+4
Standards-aligned
Pamela Gonzales
Used 12+ times
FREE Resource
4 Slides • 15 Questions
1
Unit 2 Test Review
Read through the Reteach before you answer the questions!
2
Prime and Composite Numbers
Prime number - a number that has exactly two factors, one and itself.
Example: 29 is a prime number because its' only factors are 1 and 29.
Composite number - a number that has more than two factors.
Example: 39 is a composite number because 1, 39, 3 and 13 are all factors of 39.
Important Notes** 1 is neither prime nor composite and 2 is the only EVEN prime number.
3
Multiple Choice
Four students each made a list of prime numbers.
Eric: 5, 7 17, 23
Maya: 3, 5, 13, 17
Bella: 2, 3, 17, 19
Joan: 7, 11, 13, 21
Who made an error and included a composite number?
Eric
Maya
Bella
Joan
4
Multiple Choice
Which answer choice includes all the factors of 27?
3, 9
1, 3, 9, 27
1, 3, 6, 9, 12, 27
1, 3, 6, 9, 18, 27
5
Multiple Choice
Which is a prime number?
15
17
21
39
6
Multiple Choice
Which list is only composite numbers?
1, 3, 4
2, 4, 6
4, 6, 8
5, 6, 8
7
Multiple Choice
The only factors prime numbers have are:
0 and 1
0 and itself
1 and itself
1
8
Order of Operations (GEMDAS)
G - Grouping Symbols - Parentheses and Brackets
E - Exponents - NOT FOR 5TH GRADE
MD - Multiplication and Division - These are equal to each other - which ever one comes first in the expression, you solve first
AS - Addition and Subtraction - These are equal to each other - which ever one comes first in the expression, you solve first
Important Notes** Multiplication is the only operation that does not have to show it's sign.
9
Multiple Choice
True or False?
2 + (4 x 5 - 2) + 8 = 28
True
False
10
Multiple Choice
What would be the second step in this problem?
(3 + 4) 9 + 3
parenthesis
multiplication
addition
exponent
11
Multiple Choice
Solve this expression.
24x(4-2)÷6
8
2
6
5
12
Multiple Choice
Solve this expression.
13 - 2 x 4
4
24
5
44
13
Multiple Choice
Solve this expression.
12 - [ 24 ÷ (3 + 1)] - 5
2
1
24
11
14
Expressions and Equations
An expression is a mathematical phrase, without an equal sign, that may contain numbers, unknowns (variables) and/or operations.
An equation is a mathematical phrase, with an equal sign, that may contain numbers, unknowns (variables) and/or operations.
When we are reading a word problem and finding the matching expression or equation, we have to use our knowledge of math keywords to help us decide which operations are really happening!
15
Multiple Choice
Christina is saving to buy a smart tablet that costs x amount of money. She has $284 in her savings account. Christina plans to work as a babysitter to earn the rest of the money. She charges $8.00 per hour to babysit. The equation below shows how she determined that babysitting for 20 hours would allow her to earn the amount of money she needs to buy her smart tablet.
x = 284 + (8 × 20)
What is x, the cost of the smart tablet?
$300
$312
$344
$444
16
Multiple Choice
Ethan collects 18 eggs from his family’s chickens and gives 6 of the eggs to a neighbor. He does this every week for 3 weeks. Which expression matches the words?
(18 - 6) × 3
(18 − 6) + 3
(3 × 18) − 6
3(18 + 6)
17
Multiple Choice
Jimmy had 210 marbles. He gave 35 marbles to his brother and put the remaining marbles into 5 bags. Which equation can be used to find m, the number of marbles in each bag?
m= (210+35) ÷ 5
m= (210+35) - 5
m= (210 - 35) ÷ 5
m= (210- 35) x 5
18
Multiple Choice
Use this equation to find h
h= (600 - 128) ÷ 2
264
236
536
231
19
Multiple Choice
Susan buys 3 packages of 8 apples. She uses 15 apples to make applesauce. Which equation shows how to find the number of apples, a, Susan has left?
3(8) - 15 = a
15 - 3 + 8 = a
3 x 8 + 15 = a
Unit 2 Test Review
Read through the Reteach before you answer the questions!
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