Significant Figures Form 4
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Transcript of Significant Figures Form 4
![Page 1: Significant Figures Form 4](https://reader036.fdocuments.us/reader036/viewer/2022062308/55cf905d550346703ba53a99/html5/thumbnails/1.jpg)
Significant Figures
![Page 2: Significant Figures Form 4](https://reader036.fdocuments.us/reader036/viewer/2022062308/55cf905d550346703ba53a99/html5/thumbnails/2.jpg)
Rounding to Decimal Places
10 multiple choice questions
![Page 3: Significant Figures Form 4](https://reader036.fdocuments.us/reader036/viewer/2022062308/55cf905d550346703ba53a99/html5/thumbnails/3.jpg)
0.30.4
30.35
A) B)
C) D)
Round to 1 dp
0.34
![Page 4: Significant Figures Form 4](https://reader036.fdocuments.us/reader036/viewer/2022062308/55cf905d550346703ba53a99/html5/thumbnails/4.jpg)
0.5
0.49 0.4
0.47
A) B)
C) D)
Round to 1 dp
0.48
![Page 5: Significant Figures Form 4](https://reader036.fdocuments.us/reader036/viewer/2022062308/55cf905d550346703ba53a99/html5/thumbnails/5.jpg)
2.8 2.74
3.02.7
A) B)
C) D)
Round to 1 dp
2.75
![Page 6: Significant Figures Form 4](https://reader036.fdocuments.us/reader036/viewer/2022062308/55cf905d550346703ba53a99/html5/thumbnails/6.jpg)
13.4
13.0 14.0
13.3
A) B)
C) D)
Round to 1 dp
13.374
![Page 7: Significant Figures Form 4](https://reader036.fdocuments.us/reader036/viewer/2022062308/55cf905d550346703ba53a99/html5/thumbnails/7.jpg)
26.5
25.0 26.6
26.0
A) B)
C) D)
Round to 1 dp
26.519
![Page 8: Significant Figures Form 4](https://reader036.fdocuments.us/reader036/viewer/2022062308/55cf905d550346703ba53a99/html5/thumbnails/8.jpg)
23.1823.20
23.1723.10
A) B)
C) D)
Round to 2 dp
23.1782
![Page 9: Significant Figures Form 4](https://reader036.fdocuments.us/reader036/viewer/2022062308/55cf905d550346703ba53a99/html5/thumbnails/9.jpg)
500.83
500.80
500.84
500.8A) B)
C) D)
Round to 2 dp
500.8251
![Page 10: Significant Figures Form 4](https://reader036.fdocuments.us/reader036/viewer/2022062308/55cf905d550346703ba53a99/html5/thumbnails/10.jpg)
0.0040.00417
0.0050.00418
A) B)
C) D)
Round to 3 dp
0.00417
![Page 11: Significant Figures Form 4](https://reader036.fdocuments.us/reader036/viewer/2022062308/55cf905d550346703ba53a99/html5/thumbnails/11.jpg)
5.00
4.99
4.98
4.90A) B)
C) D)
Round to 2 dp
4.999
![Page 12: Significant Figures Form 4](https://reader036.fdocuments.us/reader036/viewer/2022062308/55cf905d550346703ba53a99/html5/thumbnails/12.jpg)
0.7300 0.7390
0.73990.7210
A) B)
C) D)
Round to 4 dp
0.72995
![Page 13: Significant Figures Form 4](https://reader036.fdocuments.us/reader036/viewer/2022062308/55cf905d550346703ba53a99/html5/thumbnails/13.jpg)
Decimal Places
• When we round to decimals, we start counting as soon as we reach the decimal point.
Round 17.46789 to 2 decimal places
1 decimal place 2 decimal places, this will stay a 6 or go to a 7 depending on what the next number is
![Page 14: Significant Figures Form 4](https://reader036.fdocuments.us/reader036/viewer/2022062308/55cf905d550346703ba53a99/html5/thumbnails/14.jpg)
Significant Figures
• When we round to significant figures, we start counting as soon as we reach a number that is not zero
Round 17.46789 to 2 significant figures
1 significant figure 2 significant figures, this will stay a 7 or go to a 8 depending on what the next number is
All the numbers after will become zero
Round 17.46789 to 2 decimal places= 17.00000 or just 17
![Page 15: Significant Figures Form 4](https://reader036.fdocuments.us/reader036/viewer/2022062308/55cf905d550346703ba53a99/html5/thumbnails/15.jpg)
Round to 1 sf
Look at the next numberIt’s more than 4 so we round up!
8374 53700000
![Page 16: Significant Figures Form 4](https://reader036.fdocuments.us/reader036/viewer/2022062308/55cf905d550346703ba53a99/html5/thumbnails/16.jpg)
Round to 3 sf
Look at the next numberIt’s less than 5 so we round down!
837 437000
![Page 17: Significant Figures Form 4](https://reader036.fdocuments.us/reader036/viewer/2022062308/55cf905d550346703ba53a99/html5/thumbnails/17.jpg)
Round to 2 sf
Look at the next numberIt’s more than 4 so we round up!
0. 002899
![Page 18: Significant Figures Form 4](https://reader036.fdocuments.us/reader036/viewer/2022062308/55cf905d550346703ba53a99/html5/thumbnails/18.jpg)
Round to 3 sf
Look at the next numberIt’s more than 4 so we round up!
0. 002 8790
![Page 19: Significant Figures Form 4](https://reader036.fdocuments.us/reader036/viewer/2022062308/55cf905d550346703ba53a99/html5/thumbnails/19.jpg)
Rounding to Significant Figures
Main1. When you are rounding to
decimal places you start counting after the decimal point, but with significant figures you start counting at the first non zero number
2. i. 1000 1500 1460ii. 200 160 157iii. 40 37 37.1 iv. 6 6.1 6.09v. 0.006 0.0064 0.00640
3. a) 4.7b) 0.058c) 0.19d) 540
![Page 20: Significant Figures Form 4](https://reader036.fdocuments.us/reader036/viewer/2022062308/55cf905d550346703ba53a99/html5/thumbnails/20.jpg)
Rounding to Significant Figures (sig fig or s.f)
10 multiple choice questions
![Page 21: Significant Figures Form 4](https://reader036.fdocuments.us/reader036/viewer/2022062308/55cf905d550346703ba53a99/html5/thumbnails/21.jpg)
0.2
0.3
3
2A) B)
C) D)
Round-
0.23 to 1 s.f
![Page 22: Significant Figures Form 4](https://reader036.fdocuments.us/reader036/viewer/2022062308/55cf905d550346703ba53a99/html5/thumbnails/22.jpg)
0.05
0.04 0.1
0.0
A) B)
C) D)
Round-
0.045 to 1 s.f
![Page 23: Significant Figures Form 4](https://reader036.fdocuments.us/reader036/viewer/2022062308/55cf905d550346703ba53a99/html5/thumbnails/23.jpg)
600 620
700630
A) B)
C) D)
Round-
623 to 1 s.f
![Page 24: Significant Figures Form 4](https://reader036.fdocuments.us/reader036/viewer/2022062308/55cf905d550346703ba53a99/html5/thumbnails/24.jpg)
50005300
60005330
A) B)
C) D)
Round-
5328 to 1 s.f
![Page 25: Significant Figures Form 4](https://reader036.fdocuments.us/reader036/viewer/2022062308/55cf905d550346703ba53a99/html5/thumbnails/25.jpg)
0.0051
0.01 0.0050
0.00514
A) B)
C) D)
Round-
0.005136 to 2 s.f
![Page 26: Significant Figures Form 4](https://reader036.fdocuments.us/reader036/viewer/2022062308/55cf905d550346703ba53a99/html5/thumbnails/26.jpg)
430426.21
420400.00
A) B)
C) D)
Round-
426.213 to 2 s.f
![Page 27: Significant Figures Form 4](https://reader036.fdocuments.us/reader036/viewer/2022062308/55cf905d550346703ba53a99/html5/thumbnails/27.jpg)
3000300
3002.03010
A) B)
C) D)
Round-
3002.01 to 3 s.f
![Page 28: Significant Figures Form 4](https://reader036.fdocuments.us/reader036/viewer/2022062308/55cf905d550346703ba53a99/html5/thumbnails/28.jpg)
1000
100 900
980
A) B)
C) D)
Round-
983.4 to 1 s.f
![Page 29: Significant Figures Form 4](https://reader036.fdocuments.us/reader036/viewer/2022062308/55cf905d550346703ba53a99/html5/thumbnails/29.jpg)
0.0046
0.0045
0.00
0.004A) B)
C) D)
Round-
0.00456 to 2 s.f
![Page 30: Significant Figures Form 4](https://reader036.fdocuments.us/reader036/viewer/2022062308/55cf905d550346703ba53a99/html5/thumbnails/30.jpg)
36300 4000
4530036000
A) B)
C) D)
Round-
36345.3 to 3 s.f