Year 9 Scientific Notation Worksheet — Level 1 — 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 1 — Answers
Scientific notation is a × 10ⁿ where 1 ≤ a < 10.
1.Write 120 in scientific notation.
Answer: 1.2 × 102
Move the decimal point 2 places.
2.Write 4.3 × 102 as an ordinary number.
Answer: 430
3.Write 5 × 103 as an ordinary number.
Answer: 5,000
4.Write 5 × 105 as an ordinary number.
Answer: 500,000
5.Write 2.2 × 104 as an ordinary number.
Answer: 22,000
6.Write 8,700,000 in scientific notation.
Answer: 8.7 × 106
Move the decimal point 6 places.
7.Write 7.7 × 106 as an ordinary number.
Answer: 7,700,000
8.Write 2,600 in scientific notation.
Answer: 2.6 × 103
Move the decimal point 3 places.
9.Write 3.9 × 105 as an ordinary number.
Answer: 390,000
10.Write 2.8 × 102 as an ordinary number.
Answer: 280
11.Write 4,700,000 in scientific notation.
Answer: 4.7 × 106
Move the decimal point 6 places.
12.Write 4,700 in scientific notation.
Answer: 4.7 × 103
Move the decimal point 3 places.
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