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Worksheets11 Evaluating variable expressions pg 41
Total questions: 41
Worksheet time: 3hrs 25mins
Name
Class
Date
1.
a)
1
b)
4
c)
2
d)
5
2.
a)
16
b)
8
c)
4
d)
12
3.
Divide.
a)
3
b)
5
c)
20
d)
10
4.
a)
11
b)
12
c)
10
d)
9
5.
What is the value of the expression
x2 + y2 + x - y
when x = -1 and y = 3
x2 + y2 + x - y
when x = -1 and y = 3
a)
6
b)
8
c)
12
d)
16
6.
evaluate bc + 5a
when a = 3, b = 4, and c = -6
when a = 3, b = 4, and c = -6
a)
9
b)
38
c)
-38
d)
-9
7.
a2-b2Evaluate if a=4 and b =-2
a)
4
b)
20
c)
-4
d)
12
8.
9a - ab + 5b
if a = 2 and b = 7
if a = 2 and b = 7
a)
37
b)
67
c)
39
d)
32
9.
r3 + 2s2
if r = -3 and s = 4
if r = -3 and s = 4
a)
59
b)
5
c)
37
d)
91
10.
2x + 5(y - 1) when x=8 and y=5
a)
20
b)
31
c)
36
d)
-4
11.
3(2x + z) when x=8 and z=2
a)
12
b)
30
c)
54
d)
60
12.
Evaluate if a = 2 and b = 8
6 + 7b - 3a
6 + 7b - 3a
a)
-100
b)
100
c)
-56
d)
56
13.
evaluate bc + 5a
when a = 3, b = 4, and c = -6
when a = 3, b = 4, and c = -6
a)
9
b)
38
c)
-38
d)
-9
14.
Evaluate -2x if x = 10
a)
-8
b)
20
c)
-20
15.
Evaluate 4y if y = 3
a)
7
b)
12
16.
Evaluate 2a + 4b
if a = 10 and b = 6
if a = 10 and b = 6
a)
20
b)
24
c)
44
d)
4
17.
Evaluate when a = 15:
2(a - 5) + 2
2(a - 5) + 2
a)
22
b)
27
c)
14
d)
7
18.
b2 + 4
when b = 3
when b = 3
a)
10
b)
12
c)
13
d)
11
19.
Evaluate the expression. Let g = 3 h = 9
4h + 2g + 4
4h + 2g + 4
a)
42
b)
46
c)
34
d)
58
20.
What is the value of x?
3x + 4 when x = -2
3x + 4 when x = -2
a)
10
b)
2
c)
-2
d)
4
21.
Evaluate the expression when
x =5 and z = 4
z2 - 2x
x =5 and z = 4
z2 - 2x
a)
6
b)
2
c)
17
d)
26
22.
Evaluate the expression. Let g = 3 & h = 9, what is
4h + 2g + 4
4h + 2g + 4
a)
42
b)
46
c)
34
d)
58
23.
evaluate bc + 5a
when a = 3, b = 4, and c = -6
when a = 3, b = 4, and c = -6
a)
9
b)
38
c)
-38
d)
-9
24.
5m + 9n if m = -7 and n = 4
a)
71
b)
1
c)
-1
d)
-71
25.
x2 - xy if x = 8 and y = -3
a)
88
b)
40
c)
-8
d)
-24
26.
(18 - ab) + 4b if a = -2 and b = -5
a)
8
b)
28
c)
48
d)
-12
27.
12x ÷ 4y if x = -8 and y = 3
a)
-8
b)
72
c)
-72
d)
8
28.
k4 - 7k2 if k = 3
a)
-9
b)
-51
c)
60
d)
18
29.
Evaluate the expression
a)
-45
b)
51
c)
27
d)
-21
30.
Evaluate the expression
a)
2
b)
-2
c)
24
d)
-20
31.
Evaluate the expression
a)
-19
b)
-1
c)
-31
d)
3
32.
Evaluate the expression for x = 13.
x + 28 − x
x + 28 − x
a)
28
b)
41
c)
15
d)
−15
33.
Evaluate the expression for x = 77.
(x − 6) + 6
(x − 6) + 6
a)
77
b)
71
c)
89
d)
−71
34.
Evaluate the expression for x = −4 and y = 4.
xy
xy
a)
16
b)
-16
c)
0
d)
8
35.
Evaluate the expression for x = −4 and y = 4.
(x + 17) + (y − 17)
(x + 17) + (y − 17)
a)
21
b)
42
c)
0
d)
8
36.
Evaluate 3d if d = 5
a)
3
b)
5
c)
12
d)
15
37.
Evaluate m2 if m = 7
a)
42
b)
43
c)
49
d)
51
38.
Evaluate m + n if m = 29 and n = 11
a)
40
b)
38
c)
20
d)
18
39.
Evaluate m - n if m = 29 and n = 11
a)
29
b)
28
c)
19
d)
18
40.
Evaluate 3x - 7 if x = 12
a)
36
b)
29
c)
28
d)
13
41.
Evaluate 4w - 3y if w = 7 and y = 6
a)
24
b)
21
c)
10
d)
46
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