Year 9 Scientific Notation Worksheet — Level 2 — Practice Set 4 — Answers
Answer sheet with worked solutions for the Year 9 indices & scientific notation worksheet.
Success TutoringWorksheetsAnswer sheetYear 9 · Mathematics · Indices & Scientific NotationYear 9 Scientific Notation Worksheet — Level 2 — Practice Set 4 — Answers
Scientific notation is a × 10ⁿ where 1 ≤ a < 10.
1.Write 6.5 × 101 as an ordinary number.
Answer: 65
2.Write 97 in scientific notation.
Answer: 9.7 × 101
Move the decimal point 1 places.
3.Write 64 in scientific notation.
Answer: 6.4 × 101
Move the decimal point 1 places.
4.Write 8.8 × 10−2 as an ordinary number.
Answer: 0.088
5.Write 1.5 × 107 as an ordinary number.
Answer: 15,000,000
6.Write 0.000060 in scientific notation.
Answer: 6 × 10−5
Move the decimal point 5 places.
7.Write 2.6 × 10−2 as an ordinary number.
Answer: 0.026
8.Write 0.074 in scientific notation.
Answer: 7.4 × 10−2
Move the decimal point 2 places.
9.Write 2 in scientific notation.
Answer: 2.1 × 100
Move the decimal point 0 places.
10.Write 9.9 × 104 as an ordinary number.
Answer: 99,000
11.Write 9.6 × 10−4 as an ordinary number.
Answer: 0.00096
12.Write 0.021 in scientific notation.
Answer: 2.1 × 10−2
Move the decimal point 2 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.