9th Grade Scientific Notation Worksheet — Level 1 — Practice Set 4 — Answers
Answer sheet with worked solutions for the 9th Grade exponents & scientific notation worksheet.
9th Grade Scientific Notation Worksheet — Level 1 — Practice Set 4 — Answers
Scientific notation is a × 10ⁿ where 1 ≤ a < 10.
1.Write 1.1 × 103 as an ordinary number.
Answer: 1,100
2.Write 870 in scientific notation.
Answer: 8.7 × 102
Move the decimal point 2 places.
3.Write 97,000 in scientific notation.
Answer: 9.7 × 104
Move the decimal point 4 places.
4.Write 5,200 in scientific notation.
Answer: 5.2 × 103
Move the decimal point 3 places.
5.Write 3.3 × 103 as an ordinary number.
Answer: 3,300
6.Write 2.7 × 106 as an ordinary number.
Answer: 2,700,000
7.Write 4 × 103 as an ordinary number.
Answer: 4,000
8.Write 6,000 in scientific notation.
Answer: 6 × 103
Move the decimal point 3 places.
9.Write 9.5 × 105 as an ordinary number.
Answer: 950,000
10.Write 3.9 × 104 as an ordinary number.
Answer: 39,000
11.Write 41,000 in scientific notation.
Answer: 4.1 × 104
Move the decimal point 4 places.
12.Write 36,000 in scientific notation.
Answer: 3.6 × 104
Move the decimal point 4 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.