1. Rounding and estimating: How many significant figures?
True/false
Reflect
Your Turn
40 ?
4 ?
0.4 ?
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Rule

2. 456 Number of significant figures =
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3. 0.00456 Number of significant figures =
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4. 450.67 Number of significant figures =
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5. 456 Number of significant figures = 3
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6. 0.00456 Number of significant figures = 3
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7. 450.67 Number of significant figures = 5
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8. 8 Number of significant figures =
Your Turn
8 Number of significant figures =
Number of significant figures =
800 Number of significant figures =
Number of significant figures =
Number of significant figures =
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9. 8 Number of significant figures = 1
Your Turn - answers
8 Number of significant figures = 1
Number of significant figures = 1
800 Number of significant figures = 3
Number of significant figures = 3
Number of significant figures = 1
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