Question

Indira is using a number line to add –1 + (–3). She begins by showing –1 on the number line, as shown below. What is the sum of –1 + (–3)?

Answer 1

The answer is -4, because -1+-3=-4

Answer 2

sum of –1 + (–3) = -4.

Explanation:

Given : Indira is using a number line to add –1 + (–3). She begins by showing –1 on the number line, as shown below.

To find : What is the sum of –1 + (–3).

Solution : We have given

Indira is using a number line to add –1 + (–3).

When she start from -1 , she will jump to left by 3 unit ( left side for -3 ).

Form -1 she go to -2 then -3 then -4.

She will reach at -4 on number line.

So, the sum of –1 + (–3) = -4.

Therefore , sum of –1 + (–3) = -4.