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| Question 1 | |
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| (1.4 × 106) × (1.2 × 103) = __?__ | |
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| A. | 2.6 × 109 | B. | 2.6 × 104 | |
| C. | 1.7 × 109 | D. | 1.7 × 1018 | |
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| Question 2 | |
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| (4.5×105) ÷ (1.5×103) = __?__ | |
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| A. | 3 × 108 | B. | 3 × 102 | |
| C. | 3 × 1015 | D. | 3 × 104 | |
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| Question 3 | |
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| (2 × 103)(3 × 104) = __?__ | |
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| A. | 5 × 107 | B. | 6 × 101 | |
| C. | 6 × 1012 | D. | 6 × 107 | |
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| Question 4 | |
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| The smallest known star in the universe is OGLE-TR-122b. It has a diameter of 8.29 × 103 km. The largest known star in the universe, VY Canis Majoris, is about 1.67 × 105 times larger than OGLE-TR-122b. What is the diameter of VY Canis Majoris? | |
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| A. | 2.38 × 109 km | B. | 1.38 × 109 km | |
| C. | 1.38 × 1011 km | D. | 7.3 × 107 km | |
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| Question 5 | |
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| There are 3.2×108 virus in a sample vile. How many total number of virus will there be in 5,000 such vile? | |
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| A. | 16×108 | B. | 16.0×1012 | |
| C. | 1.6×1012 | D. | 1.6×1011 | |
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| Question 6 | |
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|  = __?__ | |
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| A. | 4 × 107 | B. | 4 × 1012 | |
| C. | 4 × 10−1 | D. | 4 × 101 | |
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| Question 7 | |
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| Find the quotient.
360,000,000 ÷ 0.0008 | |
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| A. | 4.5 × 1010 | B. | 4.5 × 1011 | |
| C. | 4.5 × 1012 | D. | 4.5 × 109 | |
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| Question 8 | |
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| Size of a Helium atom is 62 pico meter. If 105 Helium atoms are placed in a straight line, how long line will it make? (1 pico meter = 10−12 meter) | |
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| A. | 6.2 × 10−17 meter | B. | 6.2 × 10−7 meter | |
| C. | 62 × 10−6 meter | D. | 6.2 × 10−6 meter | |
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| Question 9 | |
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| Weight of a Hydrogen atom is 1.66 × 10−27 kg. How many Hydrogen atoms are there in a container that has 8.3 × 10−3 kg of Hydrogen? | |
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| A. | 5 × 1024 atoms | B. | 5 × 10−24 atoms | |
| C. | 5 × 1027 atoms | D. | 5 × 1030 atoms | |
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| Question 10 | |
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| (2 × 10 -3) (2 × 108) = __?__ | |
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| A. | 4 × 105 | B. | 4 × 1011 | |
| C. | 4 × 10−5 | D. | 4 × 106 | |
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