WorksheetsMatrices Quiz
Total questions: 21
Worksheet time: 42mins
Name
Class
Date
1.
What are the dimensions of this matrix?
a)
2 x 3
b)
3 x 2
c)
6 x 1
d)
1 x 6
2.
Dimensions?
a)
a
b)
b
c)
c
d)
d
3.
What comes first in the order?
a)
Row
b)
Column
4.
How many columns are in a 5 x 4 matrix?
a)
5
b)
4
c)
20
d)
9
5.
What must be true in order to ADD two matrices?
a)
They must be square.
b)
The dimensions must be equal.
c)
The determinant can't equal 0.
d)
The column of the 1st must equal the row of the 2nd.
6.
Perform the indicated operation
a)
b)
c)
d)
e)
not possible
7.
Perform the indicated operation
a)
b)
c)
d)
e)
not possible
8.
You can multiply a 2X3 matrix by which matrix?
a)
2X2
b)
2X12
c)
3X12
d)
2X3
9.
Add these two matrices
a)
10 -3 15
-6 1 9
b)
10 8 3
-17 1 4
12 5 0
c)
10 8
-17 1
d)
undefined
10.
Add
a)
11 8
-4 2
-4 2
b)
3 2
-6 -6
-6 -6
c)
-3 2
-4 -6
-4 -6
d)
10 8
-6 2
-6 2
11.
Find A+B
a)
8 10
8 1
8 1
b)
12 25
7 1
7 1
c)
10 30
0 1
0 1
d)
can't add two together because the rows dont match columns
12.
Subtract
a)
3 -8
0 -1
0 -1
b)
3 -4
8 -13
8 -13
c)
-3 8
0 1
0 1
d)
3 -8
-8 1
-8 1
13.
Multiply
a)
20 15 -10
30 -5 0
30 -5 0
b)
-20 15 -10
30 -5 0
30 -5 0
c)
1 8 3
11 4 5
11 4 5
d)
20 -15 10
-30 5 0
-30 5 0
14.
What do m, n, p and q equal in this scalar matrix multiplication?
a)
m=8, n=9, p=-4, q=4
b)
m=15, n = -45, p=20, q=-5
c)
m=20, n=-5, p=15, q=-45
d)
m=-5, n=20, p=-45, q=15
15.
a)
1 2
6 -8
6 -8
b)
-3 -5
-5 -11
-5 -11
c)
-2 8
-6 -12
-6 -12
d)
2 -3
5 -2
5 -2
16.
Perform the indicated operation
a)
b)
c)
d)
e)
not possible
17.
find: B*A
a)
47 30
9 5
9 5
b)
17 15
42 35
42 35
c)
10 25
7 1
7 1
d)
not possible because rows do not match columns
18.
Subtract
a)
-5
-8
3
10
-8
3
10
b)
-9
8
3
2
8
3
2
c)
5
-8
3
10
-8
3
10
d)
-5
8
3
2
8
3
2
19.
What, in relation to matrices, is a Scalar?
a)
A rate-of change-of measurement ex:
"5m/s2"
b)
A scaly pet ex:
"A Pygmy Alligator"
c)
A single value ex:
"80"
d)
Their is no such thing as a scalar
20.
Perform scalar multiplication on the matrix
a)
A
b)
B
c)
C
d)
D
21.
3A=?
a)
b)
c)
d)
100 %
