Prelim Revision

1. 15% of 140

2. ¾ of 192

3. -6 X 8

Write in Scientific Notation

4. 12 000

5. 0.00067

14 9 18 6 2 12

6. Range?

7. Median?

8. Factorise 8t – 12

9. Solve 4 + 3t = 31

10. Train travelling at 100mph for a journey of 275 miles.

How long will it take?

5 cm13cm

?

11.

12.

x10cm

300

8 cm

10 cm

Area?

13.

1. 15% of 14021

2. ¾ of 192144

3. -6 X 8-48

Write in Scientific Notation4. 12 000

1.2 X 104

5. 0.000676.7 X 10-4

14 9 18 6 2 12

6. Range?

16

7. Median?

10½

8. Factorise 8t – 12

4(2t – 3)

9. Solve 4 + 3t = 31

t = 9

10. Train travelling at 100mph for a journey of 275 miles.

How long will it take?

t = 275/100

= 2.75 hours

= 2hours 45mins

5 cm13cm

?

11.

5 cm

x

x2 = 132 - 52

x = 12cm

? = 24 cm

12.

x10cm

300O

H

A

sin 300 = x/10

x = 10 X sin300

x = 5cm

8 cm

10 cm

Area?

13. Area Rect = 10 X 8 = 80cm2

Area of circle = π X 42

= 50.3cm2

Area of Semi Circle = 25.15

Total Area = 105.15