Re-arrange sutably and find the sum in each of the following.

(i)

(ii)

(iii)

(iv)

(v)

(vi)

Write the negative (additive inverse) of each of the following:

(i)

(ii)

(iii)

(iv)

(v) 0

(vi) 1

(vii) -1

Using commutativity and associativity of addition of rational numbers, express each of the following as a rational number:

(i)

(ii)

(iii)

(iv)

Subtract the first rational number from the second in each of the following:

(i)

(ii)

(iii)

(iv)

(v)

(vi)

(vii)

(viii)

Evalute each of the following:

(i) +

(ii)

(iii)

(iv)

(v)

(vi)

(vii)

(viii)

(ix)

(x)

(xi) -