18M.1.SL.TZ2.T_4

pestleMathematicsAISLPaper 118M· sl-1-4-financial-apps-compound-interest-annual-depreciationsource ↗

The following table shows four different sets of numbers: $\mathbb{N}$ , $\mathbb{Z}$ , $\mathbb{Q}$ and $\mathbb{R}$ .

Complete the second column of the table by giving one example of a number from each set.

[4]

Josh states: “Every integer is a natural number”.

Write down whether Josh’s statement is correct. Justify your answer.

[2]

Markscheme / solution

* This question is from an exam for a previous syllabus, and may contain minor differences in marking or structure.

(A1)(A1)(A1)(A1)(C4)

[4 marks]

Incorrect (A1)

Natural numbers are positive integers. Integers can also be negative. (or equivalent) (R1) (C2)

Note: Accept a correct justification. Do not award (R0)(A1).
Accept: a statement with an example of an integer which is not natural.

[2 marks]

Examiners’ report

[N/A]