CHAPTER 1 RATIONAL NUMBERS

Choose the correct integer described in each statement.

• The price of papayas has increased 8% since last year. ( – 8 )

• The water level in the pond has dropped 1.5 m because of the dry spell. ( + 1.5 )

• The temperature in London is 5℃ below 0℃ on Monday. ( + 5 )

• Zulkifli successfully lost his weight of 2 kg. ( – 2 )

Choose the correct answer for the additions and subtractions performance.

• 19 + (–28) = 9

• 9 – (+3) – (–2) = 8

• –2 + (–1) = 3

• –5 – (–8) – 4 = 1

Find the correct answer for the question below :

–3 x (–4) x (–2) = ?

• 24

• 12

• – 24

• – 12

Calculate and find the correct answers.

–6 + 9 ÷ (–3) x (–5 + 8) =

• – 3

• – 15

• – 27

• – 30

Find the correct arrangements for descending order.

• 1.73, 1.37, – 3.17, 3.71, – 1.37

• 3.71, 1.73, 1.37, – 3.17, – 1.37

• – 0.650, – 0.056, 0.065, 0.506, 0.605

• 0.605, 0.506, 0.065, – 0.056, – 0.650

Find the correct solution for 49÷(−8+1).

• 49 ÷ (−8+1) = 49 ÷ (−7)

  = −7

• 49 ÷ (−8+1) = 49÷ (−7)

  = 7

• 49 ÷ (−8+1) = −6.125 +1

  = −5.125​

• 49 ÷ (−8+1) = −49÷ (−7)

  = 7