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Flip to reveal answers7.2 × 10⁻³ in ordinary form?
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All 11 Flashcards — Back to ordinary form
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Question
7.2 × 10⁻³ in ordinary form?
Answer
0.0072. Move the decimal 3 places left.
💡 Hint
Negative exponent -> left.
Question
3.06 × 10⁴ in ordinary form?
Answer
30 600. Move the decimal 4 places right.
💡 Hint
Positive exponent -> right.
Question
Bigger or smaller than 1?
Answer
Positive exponent -> bigger than 1. Negative exponent -> smaller than 1.
💡 Hint
Use the sign.
Question
Why is 0.48 × 10⁷ invalid?
Answer
Because 0.48 is less than 1, so the coefficient is not valid.
💡 Hint
Coefficient too small.
Question
0.48 × 10⁷ in valid form?
Answer
4.8 × 10⁶
💡 Hint
Move right, exponent down 1.
Question
Fast final check?
Answer
Check coefficient, exponent sign, and the form asked for.
💡 Hint
Coefficient, sign, form.
Question
Why is 31.5 × 10⁴ not valid standard form?
Answer
Because 31.5 is greater than 10. Rewrite it as 3.15 × 10⁵.
💡 Hint
Coefficient too big.
Question
Why is 0.6 × 10⁸ not valid standard form?
Answer
Because 0.6 is smaller than 1. Rewrite it as 6.0 × 10⁷.
💡 Hint
Coefficient too small.
Question
4.7 × 10⁶ in ordinary form?
Answer
4 700 000. Move the decimal 6 places right.
💡 Hint
Positive exponent -> right.
Question
Positive exponent tells you what?
Answer
It will be a large number greater than 1.
💡 Hint
Positive -> bigger number.
Question
24.6 × 10⁴ in valid form?
Answer
2.46 × 10⁵
💡 Hint
Coefficient too big -> move left.
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Full study notes for Back to ordinary form
Topic 1.1 hub
Standard form
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