Year 9 Scientific Notation Worksheet — Level 2 — Practice Set 2 — 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 2 — Answers
Scientific notation is a × 10ⁿ where 1 ≤ a < 10.
1.Write 8 in scientific notation.
Answer: 7.5 × 100
Move the decimal point 0 places.
2.Write 1.7 × 107 as an ordinary number.
Answer: 17,000,000
3.Write 80,000,000 in scientific notation.
Answer: 8 × 107
Move the decimal point 7 places.
4.Write 78,000 in scientific notation.
Answer: 7.8 × 104
Move the decimal point 4 places.
5.Write 66,000 in scientific notation.
Answer: 6.6 × 104
Move the decimal point 4 places.
6.Write 3.1 × 106 as an ordinary number.
Answer: 3,100,000
7.Write 0.000033 in scientific notation.
Answer: 3.3 × 10−5
Move the decimal point 5 places.
8.Write 78,000,000 in scientific notation.
Answer: 7.8 × 107
Move the decimal point 7 places.
9.Write 710,000,000 in scientific notation.
Answer: 7.1 × 108
Move the decimal point 8 places.
10.Write 0.0035 in scientific notation.
Answer: 3.5 × 10−3
Move the decimal point 3 places.
11.Write 4.2 × 10−3 as an ordinary number.
Answer: 0.0042
12.Write 3,700,000 in scientific notation.
Answer: 3.7 × 106
Move the decimal point 6 places.
Marking tips
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