Significant Figures 09 June 2021 Significant Figures Numbers

Significant Figures

09 June 2021 Significant Figures Numbers can be rounded to a given number of significant figures 275300 This is the first significant figure 0. 0003672 The first significant figure is the first non-zero number

09 June 2021 Significant Figures Numbers can be rounded to a given number of significant figures 275300 This is the second significant figure 0. 0003672

09 June 2021 Significant Figures Round 275300 to 1 significant figure This is the first significant figure 275, 300 Round up or stay the same? 3 00, 000 Round up!

Mini-Whiteboards Significant Figures

09 June 2021 What is the first significant figure? 0. 00745 This is the first significant figure

09 June 2021 What is the third significant figure? 0. 00745 This is the third significant figure

09 June 2021 What is the fourth significant figure? 302700 This is the fourth significant figure

09 June 2021 What is the third significant figure? 0. 002074 This is the third significant figure

09 June 2021 What is the first significant figure? 307482 This is the first significant figure

09 June 2021 Significant Figures Round 275300 to 2 significant figures This is the second significant figure 275, 300 Round up or stay the same? 28 0, 000 Round up!

09 June 2021 Significant Figures Round 0. 00325 to 1 significant figure This is the first significant figure 0. 00325 Round up or stay the same? 0. 003 Stay the same

09 June 2021 Significant Figures Round 36. 7 to 1 significant figure This is the first significant figure 36. 7 Round up or stay the same? 40. 0 Round up!

09 June 2021 Significant Figures Round 36. 7 to 2 significant figures This is the second significant figure 36. 7 Round up or stay the same? 37. 0 Round up!

09 June 2021 Number 4213 6435 23. 65 43. 89 0. 0465 0. 009231 0. 9649 0. 4054 0. 07008 0. 4109 0. 005007 Significant Figures To 3 s. f. To 2 s. f. To 1 s. f.

09 June 2021 Significant Figures Number 4213 To 3 s. f. 4210 To 2 s. f. 4200 To 1 s. f. 4000 6435 6440 6400 6000 23. 65 23. 7 24 20 43. 89 43. 9 44 40 0. 0465 0. 047 0. 05 0. 009231 0. 00923 0. 0092 0. 009 0. 9649 0. 965 0. 96 1 0. 4054 0. 405 0. 41 0. 4 0. 07008 0. 701 0. 70 0. 07 0. 4109 0. 411 0. 4 0. 005007 0. 00501 0. 0050 0. 005

09 June 2021 Significant Figures – Can you spot the error? This is the first significant figure 0. 0235

09 June 2021 Significant Figures – Can you spot the error? 0. 769

09 June 2021 Estimating using Significant Figures We can use significant figures to quickly estimate answers Round to 1 sf 45 × 34 50 × 30 =1500

09 June 2021 Estimating using Significant Figures Round to 1 sf 40 × 20 2

09 June 2021 Estimating using Significant Figures Screws cost £ 2. 90 per packet. How much would 21 packets cost? Round to 1 sf £ 3. 00 × 20 = £ 60

09 June 2021