9th Grade Scientific Notation Worksheet — Level 1 — Answers
Answer sheet with worked solutions for the 9th Grade exponents & scientific notation worksheet.
Success TutoringWorksheetsAnswer sheet9th Grade · Mathematics · Indices & Scientific Notation9th Grade Scientific Notation Worksheet — Level 1 — Answers
Scientific notation is a × 10ⁿ where 1 ≤ a < 10.
1.Write 8,600 in scientific notation.
Answer: 8.6 × 103
Move the decimal point 3 places.
2.Write 610,000 in scientific notation.
Answer: 6.1 × 105
Move the decimal point 5 places.
3.Write 7.8 × 105 as an ordinary number.
Answer: 780,000
4.Write 4,500 in scientific notation.
Answer: 4.5 × 103
Move the decimal point 3 places.
5.Write 3.9 × 102 as an ordinary number.
Answer: 390
6.Write 7.7 × 103 as an ordinary number.
Answer: 7,700
7.Write 9,600,000 in scientific notation.
Answer: 9.6 × 106
Move the decimal point 6 places.
8.Write 220 in scientific notation.
Answer: 2.2 × 102
Move the decimal point 2 places.
9.Write 250,000 in scientific notation.
Answer: 2.5 × 105
Move the decimal point 5 places.
10.Write 6.4 × 103 as an ordinary number.
Answer: 6,400
11.Write 410 in scientific notation.
Answer: 4.1 × 102
Move the decimal point 2 places.
12.Write 6,400,000 in scientific notation.
Answer: 6.4 × 106
Move the decimal point 6 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.