Unit 2 Revision

What is 5.6 x 10^3 in standard form?

• 5300

• 56000

• 5600

• 6500

If the price of a product increased from $50 to $60, what is the percentage increase?

• 50%

• 30%

• 20%

• 10%

Simplify 2^3 x 2^5

• 2^8 or 256

• 2^15 or 32768

• 2^3 + 2^5 or 40

• 2^2 x 2^5 or 64

In a right-angled triangle, if the length of the two shorter sides are 3 and 4, what is the length of the hypotenuse?

• 2

• 10

• 5

• 7

Find the mean of the following numbers: 5, 7, 9, 12, 15

• 8.5

• 9.6

• 10.2

• 13.4

What is 3.2 x 10^4 in standard form?

• 320

• 320000

• 32000

• 32

If the population of a city decreased from 50000 to 45000, what is the percentage decrease?

• 10%

• 15%

• 20%

• 5%

Simplify 5^3 ÷ 5^2

• 10

• 15

• 5

• 25

In a right-angled triangle, if the length of the two shorter sides are 6 and 8, what is the length of the hypotenuse?

• 16

• 12

• 10

• 14

Find the mode of the following numbers: 3, 5, 7, 7, 9

• 7

• 9

• 3

• 5