# 1. Significant Figures

Mind Map by Jamie McLardy, updated more than 1 year ago
 Created by Jamie McLardy over 6 years ago
239
6

### Description

Significant Figures Mind Map Exercise

## Resource summary

1. Significant Figures
1 3 Sig Figs
1.1 506
1.2 50.6
1.3 0.506
1.4 0.00506
1.5 If Zero's are employed just to position the decimal point then they are considered NOT significant.
2 A Figure or Digit, gives an idea of both (1) Quantity, and (2) Accuracy
3 Decimals 0.001090
3.1 The Numbers to the LEFT of the 1 are NOT significant, but all numbers to the RIGHT of the 1 ARE significant.
4 Whole Numbers 030060
4.1 The 0 to the LEFT of the 3 is NOT significant, but both 0's on the RIGHT of the 3 would be Significant.
5 The Digits from 1 to 9 are always significant.
6 0 is a significant figure IF..
6.1 It is in between two Significant Figures..
6.1.1 207 = 3 sig figs
6.1.2 20087 = 5 sig figs
6.1.3 0254 = 3 sig figs
6.1.4 00033404 = 5 sig figs
6.2 It is at the end of a number and after the decimal point..
6.2.1 2.04 = 3 sig figs
6.2.2 0.0043 = 2 sig figs
6.2.3 0.002000 = 4 sig figs
6.2.4 0.000000 = 0 sig figs
7 Whole Number EXAMPLES
7.1 1) 326
7.1.1 3 sig figs
7.2 2) 320
7.2.1 2 sig figs
7.3 3) 408
7.3.1 3 sig figs
7.4 4) 2070
7.4.1 3 sig figs
7.5 5) 30.0
7.5.1 3 sig figs
7.6 6) 1.400
7.6.1 4 sig figs
7.7 7) 30030
7.7.1 4 sig figs
7.8 8) 602.1
7.8.1 4 sig figs
8 Decimal Point EXAMPLES
8.1 1) 0.64
8.1.1 2 sig figs
8.2 2) 0.0054
8.2.1 2 sig figs
8.3 3) 0.0320
8.3.1 3 sig figs
8.4 4) 0.4050
8.4.1 4 sig figs
8.5 5) 0.900
8.5.1 3 sig figs
8.6 6) 0.101000
8.6.1 6 sig figs
9 Rounding Significant Figures
9.1 1/ 847454 4 s.f.
9.1.1 = 847500
9.2 2/ 654000 2 s.f.
9.2.1 = 650000
9.3 3/ 84764.654 4 s.f.
9.3.1 = 84760
9.4 4/ 95847500.746 3 s.f.
9.4.1 = 95800000

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