Class 6 Maths Integers Addition of Integers Numericals

Problem: Use number line and add the following integers: 9 + (– 6)

Solution: 

This can be shown on the number line as follows:

  • For addition of a positive integer, we first we move 9 steps to the right of 0 reaching +9.
  • From this point we move 6 steps to the left, since a negative number is being added.
  • We reach the point +3. Thus, (9) + (-6) = +3.

Problem: Use number line and add the following integers:  (– 1) + (– 7)

Solution: 

On the number line, we first move 1 step to the left of 0 reaching -1.

Since two negative numbers are being added, we move left twice. From the point of -1, we further move 7 steps to the left of – 1 and reach – 8.

Thus, (– 1) + (– 7) = – 8.

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