1. ©2009 – Not to be sold/Free to use
Stage 5
Year 9
Rational
Numbers
Significant
Figures
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©2009 – Not to be sold/Free to use

2. Rules: Significant Figures All non-zero numbers are significant 2971
32.5
7.456
zeros between non-zero digits are significant
3071
60.5
8.009
zeros at the end of a decimal are significant
297.10
32.00
9.000
all other zeros are not significant.
0900
0254
0.456

3. How many significant figures?
2.340
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4. How many significant figures?
0.040
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5. How many significant figures?
2340
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6. How many significant figures?
120.34
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7. How many significant figures?
2020
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