**(1) Using the number line write the integer which is : **

**(a) 3 more than 5 **

Ans: **8**

**(b) 5 more than –5 **

Ans: **0**

**(c) 6 less than 2 **

Ans: -4

**(d) 3 less than –2**

Ans: **-5**

**(2) Use number line and add the following integers : **

**(a) 9 + (– 6) **

=> **9-6**

=> **3**

**(b) 5 + (– 11) **

=> 5-11 (Hence we have to take 11 jumps to the left of number 5)

=> **-6**

**(c) (– 1) + (– 7) **

=> -1-7 (we have to take 7 jump to the left of -1)

=> **-8**

**(d) (– 5) + 10 **

=> -5 + 10 (we have to take 10 jumps to the right of -5)

=>** 5**

**(e) (– 1) + (– 2) + (– 3) **

=> -1 -2 -3 (First take two jump to left then 3 jump again at left)

=> So take total of 5 jump towards left from -1

=> **-6**

**(f) (– 2) + 8 + (– 4)**

=> **2**

**(3) Add without using number line : **

**(a) 11 + (– 7)**

=> 11-7**=> 4**

**(b) (– 13) + (+ 18)**

=> -13 + 18**=> 5**

**(c) (– 10) + (+ 19) **

=> -10 + 19**=> 9**

**(d) (– 250) + (+ 150) **

=> -250 + 150**=> 100**

**(e) (– 380) + (– 270)**

=> -380 – 270**=> -650**

**(f) (– 217) + (– 100)****=> -317**

**(4)** **Find the sum of : **

**(a) 137 and – 354**

**(b) – 52 and 52**

=> -52+52

=> **0**

**(c) – 312, 39 and 192 **

=> -312 + 39 + 192

=> -312 + (39+192)

=> -312 + 231

=> **-81**

**(d) – 50, – 200 and 300**

=> -50 -200 + 300

=> -250 + 300

=> **50**

**(5) Find the sum : **

**(a) (– 7) + (– 9) + 4 + 16**

=> (-7 – 9) + (4 + 16)

=> -16 + 20

=>** 4**

**(b) (37) + (– 2) + (– 65) + (– 8)**

=> 37 + (- 2 – 65 – 8)

=> 37 – 75

=> **-112**