9th Grade Scientific Notation Worksheet — Level 1 — Practice Set 3 — Answers
Answer sheet with worked solutions for the 9th Grade exponents & scientific notation worksheet.
9th Grade Scientific Notation Worksheet — Level 1 — Practice Set 3 — Answers
Scientific notation is a × 10ⁿ where 1 ≤ a < 10.
1.Write 720,000 in scientific notation.
Answer: 7.2 × 105
Move the decimal point 5 places.
2.Write 3.5 × 103 as an ordinary number.
Answer: 3,500
3.Write 58,000 in scientific notation.
Answer: 5.8 × 104
Move the decimal point 4 places.
4.Write 3.4 × 106 as an ordinary number.
Answer: 3,400,000
5.Write 530,000 in scientific notation.
Answer: 5.3 × 105
Move the decimal point 5 places.
6.Write 4.9 × 103 as an ordinary number.
Answer: 4,900
7.Write 750 in scientific notation.
Answer: 7.5 × 102
Move the decimal point 2 places.
8.Write 4.5 × 104 as an ordinary number.
Answer: 45,000
9.Write 5.9 × 102 as an ordinary number.
Answer: 590
10.Write 4 × 104 as an ordinary number.
Answer: 40,000
11.Write 9.7 × 106 as an ordinary number.
Answer: 9,700,000
12.Write 3,600 in scientific notation.
Answer: 3.6 × 103
Move the decimal point 3 places.
Marking tips
- Give credit for correct method even when the final answer slips — the working shows where the thinking went right.
- For open-ended tasks, use the success criteria as a checklist rather than looking for one "right" answer.
- Celebrate what went well first, then pick one thing to work on next.