Free Printable Year 8 Number Revision

1.

Without calculator, calculate 2.34 x 5.6.

a)

131.04

b)

13.1

c)

0.13

d)

3.14

2.

$30\ \times100=3\div?$

a)

0.001

b)

0.0001

c)

0.11

d)

0.1

3.

Write 93.234 in 3 significant figures.

a)

93

b)

93.00

c)

93.23

d)

93.2

4.

Maya likes to eat pizza. Every day she will eat 3/8 pizza. Work out how many days she can finish 5 pizzas.

a)

$13\ \frac{1}{3}$

b)

$1\ \frac{7}{8}$

c)

15

d)

13

5.

A bag was sold at $ 160 from its original price $ 200.

Calculate the reduction as a percentage of the original price.

a)

16%

b)

40%

c)

20%

d)

216%

6.

Why 99 is not a prime number?

a)

Because number 9 is special case.

b)

Because it can be divided by 3.

c)

Because it is not even number.

d)

Because it is odd number.

7.

Simplify $7^4\times7^5\div7^2=$

a)

$7^7$

b)

$7^0$

c)

$7^9$

d)

$7^5$

8.

3.4 x ? = 0.034

a)

0.00001

b)

0.001

c)

0.01

d)

0.1

9.

$60\%\ \times350=?\ \times\ 1750$

a)

0.012

b)

210

c)

$8\ \frac{1}{3}$

d)

$\frac{3}{25}$

10.

-1 -2 -3 4 5 6 7

Find two numbers from the list above that can give the highest possible value.

a)

7,5

b)

-1,7

c)

7,6

d)

-3. 7

11.

4 5 6 7 -9 -1 -3 -4

Find number pair that when it substract, it will produce the smallest negative number.

a)

4 and 7

b)

-9 and -1

c)

-9 and -4

d)

-4 and 5

12.

Andy buys a bouquet of flower cost $ 250 to propose her girlfriend. Her girlfriend reject him that he sells the bouquet to Mike. Other than his broken heart, he also make loss of 10%. Calculate how much Mike pay for the bouquet?

a)

225

b)

200

c)

150

d)

275

13.

Based on the tree diagram, how do you write the product of the prime factor?

a)

$23\times5$

b)

$2\ \times5$

c)

$2^2\times5$

d)

$2^3\ \times5$

14.

Find the product of prime factor of 375.

a)

$53\ \times3$

b)

$5^3$

c)

$3\times5^3$

d)

$3^3\times5$

15.

Write 64 in the power of 4.

a)

$4^3$

b)

4

c)

64

d)

$2^5$

Year 8 Number Revision

Total questions: 15

Worksheet time: 8mins

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