Arithmatical -Decimal Fraction Examples

1.What decimal of an hour is a second?
A.  .0025B.  .0256
C.  .00027D.   .000126

2.The value of (4.7×13.26 + 4.7×9.43+4.7×77.31) is
A.  0.47B.  47
C.  470D.  4700

3.The value of (0.2×0.2+0.01) (0.1×0.1+0.02)-1 is equal to
A.  5/3B.   9/5
C.  41/4D.  41/12

4.Which one of the following is equal to 3.14×106?
A.  314B.  3140
C.  3140000D.  None of these

5.0.014×0.014= ?
A.  0.000196B.  0.00196
C.  19.6D.  196




6.A tailor has 37.5 metres of cloth and he has to make 8 pieces out of a metre of cloth. How many pieces can be make out of this cloth?
A.  300B.  360
C.  400D.  None of these

7.The expression (11.98×11.98+11.98×+0.02×0.02) will be a perfect square for x equal to
A.  0.02B.  0.2
C.  0.04D.  0.4

8.12.1212+17.0005 - 9.1102 = ?
A.  20.0015B.  20.0105
C.  20.0115D.  20.1015

9.4.036 divided by 0.04 gives
A.   1.009B.  100.09
C.  10.9D.  None of these

10.If 2994 ÷14.5 = 172, then 29.94 ÷ 1.45 = ?
A.  172B.  0.172
C.  1.72D.  17.2
11.The value of (0.137+0.098)²-(0.137 - 0.098)² / 0.137×0.098 is
A.   0.039B.  0.235
C.  0.25s D.  4

12.(7.5×7.5+3.75+2.5×2.5) is equal to
A.  30B.  60
C.  80D.  100

13.The value of 3.6x0.48x2.50 / 0.12x0.09x0.5 is
A.  80B.  800
C.  8000D.  80000