Arithmatical - Decimal Fraction
DIRECTIONS : Problems based on Decimal Fraction.
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? |
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A. 300 |
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B. 360 |
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C. 400 |
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D. None of these |
Solution |
Length of each pieces | = (1 / 8) m |
= 0.125 m |
Required number of pieces(37.5/0.125) | = (375×100 / 125) |
= 300. |
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7. |
How many digits will be there to the right of the decimal point in the product of 95.75 and .02554? |
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A. 5 |
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B. 6 |
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C. 7 |
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D. 8 |
Solution |
Som of decimal places | = 7. |
Since the last digit to the extreme right will be zero ( ∴ 5 x 4 = 20), so there will be 6 significant digits to the right of the decimal point. |
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Solution |
Given expression |
=(12.1212+17.0005)-9.1102 |
= (29.1217 - 9.1102) |
=20.0115. |
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Solution |
4.036 / 0.04 | = 403.6 / 4 |
= 100.9 |
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10. |
If 2994 ÷14.5 = 172, then 29.94 ÷ 1.45 = ? |
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A. 172 |
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B. 0.172 |
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C. 1.72 |
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D. 17.2 |
Solution |
(29.94/1.45) | = 299.4/14.5 |
= (2994/14.5×1/10) |
= 172/10 |
= 17.2. |
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