Year 11 Scientific Notation Worksheet — Level 1 — Answers
Answer sheet with worked solutions for the Year 11 indices & scientific notation worksheet.
Year 11 Scientific Notation Worksheet — Level 1 — Answers
Scientific notation is a × 10ⁿ where 1 ≤ a < 10.
1.Write 7.7 × 106 as an ordinary number.
Answer: 7,700,000
2.Write 8.1 × 105 as an ordinary number.
Answer: 810,000
3.Write 500,000 in scientific notation.
Answer: 5 × 105
Move the decimal point 5 places.
4.Write 2.2 × 105 as an ordinary number.
Answer: 220,000
5.Write 8.5 × 102 as an ordinary number.
Answer: 850
6.Write 91,000 in scientific notation.
Answer: 9.1 × 104
Move the decimal point 4 places.
7.Write 8.6 × 103 as an ordinary number.
Answer: 8,600
8.Write 970 in scientific notation.
Answer: 9.7 × 102
Move the decimal point 2 places.
9.Write 220 in scientific notation.
Answer: 2.2 × 102
Move the decimal point 2 places.
10.Write 420,000 in scientific notation.
Answer: 4.2 × 105
Move the decimal point 5 places.
11.Write 9.1 × 104 as an ordinary number.
Answer: 91,000
12.Write 89,000 in scientific notation.
Answer: 8.9 × 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.