Use number line and add the following integers :
(a) $ 9+(-6) $
(b) $5 + (– 11)$
(c) $(– 1) + (– 7)$
(d) $(– 5) + 10$
(e) $(– 1) + (– 2) + (– 3)$
(f) $(– 2) + 8 + (– 4)$

To do:

We have to add the given numbers using the number line.

Solution:

 (a) \( 9+(-6) \)

Step 1: Mark 9

Step 2: Move 6 places to the left from 9 as we have to add $-6$ to 9.

 (b) \( 5+(-11) \)

Step 1: Mark 5

Step 2: Move 11 places to the left from 5 as we have to add $-11$ to 5.

(c) $(– 1) + (– 7)$

Step 1: Mark $-1$

Step 2: Move 7 places to the left from $-1$ as we have to add $-7$ to $-1$.

(d) $(– 5) + 10$

Step 1: Mark $-5$

Step 2: Move 10 places to the right from $-5$ as we have to add $10$ to $-5$.

(e) $(– 1) + (– 2) + (– 3)$

Step 1: Mark $-1$

Step 2: Move 2 places to the left and then 3 places to the left from $-1$ as we have to add $-2$ and then $-3$ to $-1$.

(f) $(– 2) + 8 + (– 4)$

Step 1: Mark $-2$

Step 2: Move 8 places to the right from $-2$ and then 4 places to the left from the resulting value as we have to add $8$ to $-2$ and then $-4$ to the resulting value.

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Updated on: 10-Oct-2022

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