Grade 7 Exponents and Powers Worksheets Grade 7 Maths Exponents and Powers Very Short Answer Type Questions. Write in the standard form: 1. The distance between Earth and Moon is 384,000 km. 2. Speed of light in vacuum is 300,000,000 m/s. 3. 0.0034256. Find the value of: 4. 2° × 3° × 4°.