Pre Test Number System

2-5-(-8)=...

• 1

• -1

• -5

• 5

• 3

• -7

• 7

• -3

The temperature in London is −3°C. Paris is 7° warmer than London. Oslo is twice as cold as London. How much warmer is Paris than Oslo?

• -2°C

• 10°C

• -10°C

• 2°C

16, 19, 49, 72, 96 Which of the numbers is a prime number?

• 16

• 19

• 49

• 96

Which of the following is the multiple of both 6 and 8?

• 12

• 18

• 24

• 36

What is the HCF of 20 and 24?

• 4

• 5

• 6

• 120

What is the LCM of 30 and 40?

• 5

• 10

• 60

• 120

Burgers come in packs of 20. Buns come in packs of 12. What is the smallest number of burgers and buns you can buy so every burger has a bun?

• 40

• 50

• 60

• 120

• -2