Add the following on the number line:
(i) ($-$12) $+$ ($-$2)
(ii) 10 $+$ ($-$7)
(iii) 8 $+$ ($-$8)
(iv) ($-$6) $+$ ($-$2) $+$ (3)


Given:

($-$12) $+$ ($-$2), 10 $+$ ($-$7), 8 $+$ ($-$8) and ($-$6) $+$ ($-$2) $+$ (3)


To find:

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


Solution:


(i) ($\mathbf{-}$12) $\mathbf{+}$ ($\mathbf{-}$2)


Step 1: First mark $-$12.


Step 2: Move 2 steps to the left.

So, the answer is $-$14.


(ii) 10 $\mathbf{+}$ ($\mathbf{-}$7)


Step 1: First mark 10.


Step 2: Move 7 steps to the left.

So the answer is 3.


(iii) 8 $\mathbf{+}$ ($\mathbf{-}$8)


Step 1: First mark 8.


Step 2: Move 8 steps to the left.

So the answer is 0


(iv) ($\mathbf{-}$6) $\mathbf{+}$ ($\mathbf{-}$2) $\mathbf{+}$ (3)


Step 1: First mark $-$6.


Step 2: Move 2 steps to the left.


Step 3: Move 3 steps to the right.

So the answer is $-$5.

Updated on: 10-Oct-2022

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