Note: Not available

Note: The sum of decimal places in the numerator and the numerator and the denominator being the same,we may remove the decimal point . :.Given Exp , `= (625 xx 729 xx 289)/(17 xx 25 xx 81)` `= 3825`.

Note: Given Exp , `= ([(0.6)^2]^2 - [(0.5)^2]^2)/((.6)^2 + (0.5)^2)` `= ([(0.6)^2 + (0.5)^2][(0.6)^2 - (0.5)^2])/((0.6)^2 + (0.5)^2)` `= (0.6)^2 - (0.5)^2` `= (0.6 + 0.5)(0.6 - 0.5)` `= (11 xx 0.1)` `= .11`.

Note: Given Exp , `=((a-b)^2 + (a + b)^2)/(a^2 + b^2)` `= (2(a^2 + b^2))/((a^2 + b^2))` `=2`.

Note: Given Exp , `= ((a + b)^2 - (a - b)^2)/(ab)` `=( 4ab)/(ab)` `= 4`.

Note: Given , `12276/1.55` `= 7920` :. `122.76/15.5` `= 12.276/1.55` `= 12276/1.55 xx 1/1000` `= 7920/1000` `= 7.92`

Note: Given ,`2805/2.55 = 1000`. :.`280.5/25.5` `= 28.05/2.55` `= 2805/2.55 xx 1/100` `= 1100/100` `= 11`.

Note: Not available

Note: Given ,`9072/168 = 54`. `:..9072/16.8 = 9.072/168` `= 9072/168 xx 1/1000` `= 54/1000` `= .054`.

Note: Given number with two decimal places are : `1.75,5.60` and `7.00` Without decimal places ,these numbers are : `175,560` and `700`,whose H.C.F.is `35`. :. H.C.F.of given numbers `= 0.35`.