Chapter 1 Rational Numbers

Which of the following has the greatest value?

• 0

• • - 5.7

• • - 41

The diagram shows a number sequence.

–21, –18, –15, –12, k, –6, –3

Find the value of k.

• • - 8

• • - 9

• • - 10

• • - 11

The reading of a thermometer rises from –4°C to

12°C. What is the difference in temperature?

• 20°C

• 16°C

• 8°C

• 4°C

Which numbers which are not rational numbers?

• 3.986572......

- 12, p , - 3, q , 6

Find the value of p and q to form an arrangement of integers in ascending order.

• p = - 7

  q = 3

• p = -7

  q = 4

• p = - 6

  q = 3

• p = - 6

  q = 4

7 × 3 + 7 × 2 = 7 × (3 + 2)

• Distributive Law

• Associative Law

4 × (25 × 8) = (4 × 25) × 8

• Associative Law

• Distributive Law

50 ml of water is evaporated after boiling for

a few minutes.

Write an integer to represent the volume of water

in the above statement.

• 50 ml

• • - 50 ml

Which statement is true?

• All decimals are rational numbers.

• Not every integer is a rational number.

• A rational number can be written in fractional form.