Find the sum: (a) `3/6+4/6`
b)`3/4+2/8`

Find the sum:  (i) 5/6+3+3/4 (ii) 2 3/5+4 7/(10)+2 4/(15)

Evaluate the sum: 6/(13)+3/(4)

Re- arrange suitably and find the sum: (-4)/7+7/6+2/7+\ 3+\ (-11)/6

Find the sum given below : (i) 3+6+9+ ....+96 " " (ii) 2+4+6+....+ 50

Draw hops on a number line to show the addition statement and find the sum : {:(a.,3 + (-7),b.,(-4) + 6),(c.,3 + 5,d.,(-2) + (-5)):}

If a : b = 3: 8 , find the value of (4a + 3b)/(6a-b) .

Find the sum to 8 terms of 3 + 6 + 12 + ...

Find the sum of the series 1/(3^2+1)+1/(4^2+2)+1/(5^2+3)+1/(6^2+4)+oo

Find the sum: 2+4+6+\ .... +200 (ii) 3+11+19+\ ..... +803 (iii) (-5)+(-8)+(-11)+\ ...... +(-230)

Find the sum of: 24 terms and n terms of 2 (1)/(2) , 3 (1)/(3) , 4 (1)/(6) ,5 ,......,