WorksheetsUnit 1 Number
Total questions: 23
Worksheet time: 11mins
Name
Class
Date
1.
Estimate the sum of 52+59 by rounding to the nearest tens
a)
110
b)
100
c)
111
d)
90
2.
Estimate.
58 x 61 =
58 x 61 =
a)
3,000
b)
4,000
c)
3,600
d)
360
3.
Estimate the product 36 x 92 =
a)
3,600
b)
3,312
c)
2,700
4.
Estimate the product of 9.7 and 3.3
a)
33
b)
30
c)
40
d)
41
5.
-6 ÷ -3
a)
-3
b)
3
c)
-2
d)
2
6.
7 x -4
a)
-28
b)
-21
c)
35
d)
-35
7.
3 - (-9) =
a)
12
b)
-12
c)
6
d)
-6
8.
92 + (-94)
a)
-2
b)
2
c)
186
d)
-186
9.
What is the square root of 49?
a)
7
b)
8
c)
6
d)
5
10.
Choose the answer.
52
52
a)
10
b)
15
c)
20
d)
25
11.
Which of the following is a square number?
a)
9
b)
12
c)
15
d)
20
12.
25−16= ?
The question mark is represented by:
a)
9
b)
1
c)
3
d)
5
13.
If p=3, q=10 , find q2−p2
a)
7
b)
1
c)
49
d)
91
14.
When a = 3, b = 4 and c = 5.
Work out the value of the following expressions of
2a2+c2
(a)
15.
1,2,8 and 16 are all factors of 16. Which factor is missing
a)
3
b)
4
c)
5
d)
6
16.
What does HCF mean?
a)
Highest Cookie Fever
b)
Highest Common Factor
c)
Highest Common Multiple
d)
Highest Compared Factor
17.
Find the HCF of 21 and 28
a)
3
b)
4
c)
7
d)
14
18.
What is the LCM of 15 and 10?
a)
15
b)
25
c)
30
d)
20
19.
Which of these statements is true?
a)
All numbers have 4 factors.
b)
2 is a factor of every number.
c)
1 is a factor of every number.
d)
All odd numbers have an odd number of factors.
20.
Prime numbers have _____ factors.
a)
no
b)
3
c)
1
d)
2
21.
Find the prime factorization of 40
a)
2 x 5 x 2
b)
2 x 20
c)
5 x 8
d)
2 x 2 x 2 x 5
22.
Write 250 as the product of it's prime factors...
a)
2 x 53
b)
2 x 5 x 5 x 5
c)
2 x 2 x 5 x 5
d)
22 x 52
23.
If Juanita runs every third day and swims every fifth day, what is the first day that she will both run and swim again?
a)
5
b)
15
c)
45
d)
30
100 %
