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©2009 – Not to be sold/Free to use Stage 5 Year 9 Rational Numbers Significant Figures Press Ctrl-A ©2009 – Not to be sold/Free to use

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

How many significant figures? 2.340 Try Again! Right On! 1 2 3 4 5

How many significant figures? 0.040 Try Again! Right On! 1 2 3 4 5

How many significant figures? 2340 Try Again! Right On! 1 2 3 4 5

How many significant figures? 120.34 Try Again! Right On! 1 2 3 4 5

How many significant figures? 2020 Try Again! Right On! 1 2 3 4 5