 Substitution: replacing variables with numbers
3 years ago
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Practice 15 QuestionsShow answers
• Question 1
30 seconds
Q. 12 + n = ______________
n=4
18
20
16
12 + 4n
• Question 2
30 seconds
Q. y - 6=__________
y=10
4
1
16
10
• Question 3
30 seconds
Q. 2(b) + 8= __________
b=2
12
10
16
8
• Question 4
30 seconds
Q. (22+ 5) + 2
What is the first step to solving this problem?
P
E
MD
AS
Multiply
Divide
Exponents
Parenthesis
• Question 5
30 seconds
Q. 2(c) + 5=_______________
c= 6
15
17
13
11
• Question 6
30 seconds
Q. twice the sum of 2 and c
2 x 2 + c
2 + c
2(2 + c)
(2 + c)
• Question 7
30 seconds
Q. 100 divided by n
n/100
100/n
100n
n100
• Question 8
30 seconds
Q. 3(c) -11= ___________
c= 5
-3
7
9
4
• Question 9
30 seconds
Q. (c-10) + 8= ________
c= 10
8
0
2
4
• Question 10
30 seconds
Q. a number decreased by 10
10-n
10/n
n-10
10n
• Question 11
30 seconds
Q. 102+ 102= _________
100
1000
200
10000
• Question 12
30 seconds
Q. 22+32= _______
11
10
13
16
• Question 13
30 seconds
Q. 34- 42 + 8n
What is the first step to solving this problem?
P
E
MD
AS
Multiplication
Exponents
Subtraction
• Question 14
30 seconds
Q. 2(b) - 3=______
b=5
2
10
1
7
• Question 15
30 seconds
Q. Last one,  5x + 2x + 2= ___________
x= 2