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**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)**Answer**

Two important things to remember

When we add positive integer, we move to the right

When we add negative integer, we move to the right

a) 9 + (− 6)

We start with number 9 and move to left six steps and we reach the number 3

b) 5 + (− 11)

We start with number 5 and move to left 11 steps and we reach the number -6

c) (− 1) + (− 7)

We start with number -1 and move to left 7 steps and we reach the number -8

d) (− 5) + 10

We start with number -5 and move to right 10 steps and we reach the number 5

e) (− 1) + (− 2) + (− 3)

We start with number -1 and move to left 2 steps and we reach the number -3. Then again we move to left 3 steps and we reach finally -6

f) (− 2) + 8 + (− 4)

We start with number -2 and move to right 8 steps and we reach the number 6. Then again we move to left 4 steps and we reach finally 2

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