**Question 1**:

Diagram below is part of a number line.

What is the value of

*P*and of

*Q*?

*Each gradation on the number line represents 4 units. Thus*

**Solution**:*P*= –12 and

*Q*= 12.

**Question 2**:

Diagram below shows a sequence of numbers.

*K*and

*M*represent two numbers.

$$\overline{)\text{}\overline{)19}\text{}\overline{)13}\text{}\overline{)K}\text{}\overline{)\text{}1\text{}}\text{}\overline{)M}\text{}}$$ What are the values of

*K*and

*M*?

**Solution**:*= 13 – 6 = 7*

K

K

*M*= 1 – 6 = –5

**Question 3**:

Diagram below shows five integers.

Find the sum of the largest integer and the smallest integer.

*The largest integer = 1*

**Solution**:The smallest integer = –10

Sum of the largest integer and the smallest integer

= 1 + (–10)

= –9