Unit 1 - Number

Factors, Multiples, HCF and LCM

100

What is the HCF of 15 and 27

3

200

What is the LCM of 15 and 27?

135

300

What is the smallest multiple of 7 larger than 100?

105

400

How many 2.4 m lengths of wire can be cut from a roll 156.4 m long?

65 lengths

500

Three bells commence chiming together and continue at intervals of 6, 8 and 10 seconds respectively. How many minutes until they all chime together again?

2 minutes

PEMDAS

100

Simplify: 5 - 2 x 10

-15

200

Simplify: 28 - 8 ÷ 2

24

300

Simplify: 16 + 4 - 8 ÷ 2

16

400

Simplify: 200 ÷ (4 - 6 ÷ 3)

100

500

Simplify: 57 ÷ (7 - 2 x 3)

57

PERCENTAGE - FRACTIONS - DECIMALS

100

Evaluate: 10.76 + 8.3 

19.06

200

Write 6.34 as a percentage.

634%

300

Write in decimal form: 4/11

0.363636...

400

Express as a fraction in lowest terms: 025%

1/400

500

Find 55% of 160

88

Prime Numbers and INDEX NOTATION

100

Express in index notation a x a x a x b x b x c

a³b²c

200

Find the integer equal to 2 x 3³ x 5²

1350

300

Express 252 as a product of primes in index notation.

2² x 3² x 7

400

Find the last digit of 6⁵⁰

6

500

Find the last digit of 7¹⁰⁰

1

MISCELLANEOUS

100

The sweet shop sells licorice at $9.40 per kg. How much would 250 g of licorice cost?

$2350

200

Renee used 1/3 of a length of pipe and later used 2/3 of what remained. What fraction of the pipe is left?

2/9

300

If 20% of a shipment of books weighs 560 kg, find the total weight of the shipment.

2000 kg

400

A machine costing $80 000 loses value of depreciates at 10% per year. Find its value after 2 years.

$64 800

500

Over a period of time, the value of a house increased by 15% to $455 400. Find the original value of the house.

$396 000