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Worksheets7TH GRADE SUBSTITUTION
Total questions: 12
Worksheet time: 12mins
Name
Class
Date
1.
If a = 4 and b = 6, what is the value of 3a + 5b?
a)
40
b)
42
c)
44
d)
46
2.
If x = 5, find the value of 7x-1.
a)
34
b)
36
c)
35
d)
37
3.
If y = 7, find the value of 2(y+4).
a)
11
b)
22
c)
20
d)
12
4.
What is the value of 7a + 3 if a = -2?
a)
-11
b)
11
c)
10
d)
-10
5.
What is the value of -3y - 9 if y = -8?
a)
15
b)
-15
c)
14
d)
-14
6.
If k=5 , find 4k+3
a)
453
b)
2
c)
4
d)
8
7.
If p=3, q=10 , find q2−p2
a)
7
b)
1
c)
49
d)
91
8.
If r=4, s=8 , find s5r2
a)
6
b)
8
c)
10
d)
12
9.
Evaluate the expression is a = 6
a + a2 =
a)
18
b)
42
c)
612
10.
Work out the value of the following expressions when a = 3, b = 4 and c = 5.
2a2 + c2
2a2 + c2
a)
22
b)
34
c)
68
d)
43
11.
Work out the value of the expression when a = 3, b = 4 and c = 5.
a)
3
b)
1 1/3
c)
4
d)
1/3
12.
Work out the value of the expression when x = 3, y = – 2 and z = – 4.
a)
1
b)
-1
c)
1/5
d)
-6
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