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WorksheetsYear 8 Self Evaluation Number 1
Total questions: 9
Worksheet time: 5mins
Name
Class
Date
1.
-48 ÷ 8
a)
6
b)
-6
c)
40
d)
-56
2.
What is the Highest Common Factor of 30 and 72?
a)
2160
b)
2
c)
6
d)
360
3.
What is the Lowest Common Multiple of 30 and 72?
a)
2160
b)
3
c)
6
d)
360
4.
Which of the following statements are true?
a)
8² = 64 and √64 = 8
b)
7² = 14 and √14 = 2
c)
36² = 72 and √36 =18
d)
9² = 72 and √72 = 9
5.
What is 144 written as a product of its prime factors?
(use a prime factor tree to help you)
(use a prime factor tree to help you)
a)
2 x 2 x 4 x 9
b)
2 x 2 x 6 x 2 x 3
c)
2 x 2 x 2 x 2 x 3 x 3
d)
2 x 2 x 3 x 3 x 3 x 3
6.
Which of the following calculations are correct?
a)
0.034 x 1000 = 3.4
b)
56.23 ÷ 10² = 0.5623
c)
3.69 x 10-3 = 0.0369
d)
98592 ÷ 10-2 = 985.92
7.
Which of the following have been rounded to significant figures (sf) correctly?
a)
239003 = 24 (2 sf)
b)
5860065 = 6000000 (1 sf)
c)
0.00008032 = 0.000081 (2 sf)
d)
0.2700852 = 0.200 (3 sf)
8.
Which of the following is correctly written in Standard Form?
a)
260 = 2.6 x 10²
b)
268.65 = 26.865 x 10
c)
6800 = 68 x 10²
d)
483000 = 4.83 x 103
9.
Calculate (4.2 x 104) x (3 x 102) and give your answer in Standard Form.
a)
12.6 x 10^6
b)
12.6 x 10^8
c)
1.26 x 10^7
d)
1.26 x 10^8
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