Here, 270.24 + 12.52+ 1.5 can be written as

270.24 + 12.52 + 1.50 = 284.26

Rs 313.86

Rs 682

To get the required number, we have
117.47 - 47.95 = 69.52

\(19\frac { 3 }{ 100 } =19+\frac { 3 }{ 100 } \)= 19 + 0.03 = 19.03

Suppose \(\times\) should be added to 60.30 to set 100.70.
\(\therefore\) 60.30 + x = 100.70
\(\Rightarrow\) x = 100.70 - 60.30
\(\\\quad100.70\\\\\\\\\\\\\\\\-60.30\\\_\_\_\_\_\_\_\_\_\_\_\\\quad40.40\\\_\_\_\_\_\_\_\_\_\_\_\)
\(\therefore\) x = 40.40
Hence, required result is 40.40

Converting the given decimals into like decimals
we get
53.5 - 34.68 + 64.75 - 28.9
= (53.50 + 64.75)-(34.68 + 28.90)
= 118.25 - 63.58
= 54.67

Converting the given decimals into like decimals
we get
67.250, 249.000, 8.785, 9.800 and 0.230
Here, 
\(\\\\67.250\\249.000\\\quad8.785 \\\quad9.800\\+ 0.230\\\_\_\_\_\_\_\_\_\\ \ Rs\ 335.065\\ \_\_\_\_\_\_\_\_\)

We know that, 1000 m = 1 km
15 km 245 m = 15 km + \(\frac { 245 }{ 1000 } \) km
= 15 km + 0.245 km = 15.245 km  

2.876 kg - 0.316 kg
i.e.   
\(\quad 2.876\\-0.316\\ \_\_\_\_\_\_\_\_\\ \ Rs\ 2.560 kg\\ \_\_\_\_\_\_\_\_\)

We subtract 25.5 from 60 to get the required result.
\(\therefore\) 
\(\quad 60.0\\-25.5\\ \_\_\_\_\_\_\_\_\\ \ Rs\ 34.5\\ \_\_\_\_\_\_\_\_\)
So, 34.5 should be added to 25.5 to get 60.

\(4.50=4+\frac { 50 }{ 100 } =4+\frac { 1 }{ 2 } =4\frac { 1 }{ 2 } =\frac { 9 }{ 2 } \)

Here 0.65=\(\frac { 65 }{ 100 } =\frac { 13 }{ 20 } \)

Here, \(\frac { 12 }{ 10 } =1.2\)

We know that 1 m \(={1\over 1000}\) km
\(\therefore\)    70 km 5 m = 70 km + 5 m
= 70 km \(+5\times{1 \over 1000}\) km
= 70 km \(+{5\over 1000}\) km
= (70+0.005) km
= 70.005 km.