Fractions
 51.3 + 7.078 +1.38 + 0.9 = ?

 61.668
 59.238
 60.658
 None of these

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51.300 + 7.078 + 1.380 + 0.900
Correct Option: C
51.300 + 7.078 + 1.380 + 0.900 = 60.658
 The product of 3.5413 x 2.1 is

 7.44673
 7.43673
 7.53673
 None of these

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For the product of 3.5413 x 2.1
Consider 35413 x 21 = 743673
Total decimal places = 4 + 1Correct Option: B
For the product of 3.5413 x 2.1
Consider 35413 x 21 = 743673
Total decimal places = 4 + 1
∴ 3.5413 x 2.1=7.43673
 [( 3.242 x 14 ) / 100] = ?

 0.045388
 4.5388
 453.88
 None of these

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Multiplying 3.242 x 14=4.5388
Now divide 4.5388 by 100Correct Option: A
Multiplying 3.242 x 14=4.5388
Now divide 4.5388 by 100
So, 4.5388 ÷ 100= 0.045388
∴ Shift the decimal two places to the left as 100
 9.724 ÷ 100 = ?

 972.4
 9.724
 0.09724
 None of these

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Shift decimal two palaces to the left. i.e 100
Correct Option: C
9.724 ÷ 100 = 0.09724
Shift decimal two palaces to the left. i.e 100
 5 x 0.25 x 6.301 x 0.00394=?

 0.0310324220
 0.0310324210
 0.0310324250
 None of these

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Total decimal places=(2+3+5) = > 10
Correct Option: C
Here 5 x 25 x 6301 x 394=310324250
Total decimal places = (2+3+5) = 10
∴ 5 x 0.25 x 6.301 x 0.00394 = 0.0310324250