Add the following:
(a) `2/7 +4/7`
(b) ` 2/{10}+4/{10} +3/{10}`

Add the following -3/7,-3/2,-3/4

Find the following: 7/(10)+2/(10)

Add the following: x-3y-2z (ii) 4a b-5b c+7c a

Add the following fractions: 1/6+4/6 (ii) 2/7+3/7+4/7

Write each of the following as decimals: (a) 65+2/10+7/100 (b) 45 + 9/100 (c) 88 + 5/10 + 2/1000 (d) 3/10 + 7/1000

Work out the following : 2""1/4-1""7/10

Add the following on a number line: (3)/(7)and(4)/(7)

Find the number from each of the following expanded forms : , (a) 8 xx 10^4 + 6 xx 10^3 + 0 xx 10^2 + 4 xx 10^1 + 5 xx 10^0 , (b) 4 xx 10^5 + 5 xx 10^3 + 3 xx 10^2 + 2 xx 10^0 , (c) 3 xx 10^4 + 7 xx 10^2 + 5 xx 10^0

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)

Express the following as improper fractions : (a) (7) 3/4 (b) (5) 6/7 (c) (2) 5/6 (d) (10) 3/5 (e) (9) 3/7 (f) (8) 9/4