Unit 1 and 2 Revision

Answer explanation

Find an irrational number between 5 and 6.

Example: "root 45"

(a)  

Write these numbers in standard form.

2 600 000

• 2.6 x 10⁷

• 2.6 x 10^-7

• 2.6 x 10^-6

• 2.6 x 10⁶

Write this number in standard form.

20 800 000

• 20.8 x 10⁶

• 2.08 x 10⁶

• 20.8 x 10⁷

• 2.08 x 10⁷

Write each number in full.

5.4 x 10⁴

• 5 400

• 54 000

• 540 000

• 540

1.031 x 10⁸

• 13 100 000

• 103 100 000

• 1 031 000 000

• 131 000 000

A Light year is the distance light travels in one year. One light year is 9 460 000 000 000 km. Write this distance in standard form.

Use "shift + 6" for the symbol ^.

(a)  

Write this number in standard form.

0.000 03

(a)