DIRECTIONS : Convert the following into vulgar fractions.
| 1. | What decimal of an hour is a second? |
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| A. .0025 | B. .0256 |
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| C. .00027 | D. .000126 |
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| Solution |
| Required decimal | = 1/ 60 x 60 |
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| = 1/ 3600 |
| = .00027. |
|
| 2. | The value of (4.7×13.26 + 4.7×9.43+4.7×77.31) is |
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| A. 0.47 | B. 47 |
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| C. 470 | D. 4700 |
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| Solution |
| Given expression | = 4.7×(13.26+9.43+77.31) |
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| = 4.7 ×100 |
| = 470. |
|
| 3. | The value of (0.2×0.2+0.01) (0.1×0.1+0.02)-1 is equal to |
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| A. 5/3 | B. 9/5 |
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| C. 41/4 | D. 41/12 |
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| Solution |
| Given expression | (0.2×0.2+0.01)/ (0.1×0.1×+0.02) |
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| = 0.04+0.01/0.01+0.02 |
| = 0.05 / 0.03 |
| = 5 / 3. |
|
| 4. | Which one of the following is equal to 3.14×106? |
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| A. 314 | B. 3140 |
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| C. 3140000 | D. None of these |
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| Solution |
| Given, 3.14 ×106 | =3.140000×1000000 |
| = 3140000. |
|
| 5. | 0.014×0.014= ? |
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| A. 0.000196 | B. 0.00196 |
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| C. 19.6 | D. 196 |
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| Solution |
| Sum of decimals places= 6. |
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| 14×14 | = 196. |
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| = s0.014×0.014 |
| = 0.000196 |
|
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