Significant Figures Rounding to Decimal Places 10 multiple choice questions 0.3 0.4 3 0.35 A) B) C) D) Round to 1 dp 0.34 0.5 0.49 0.4 0.47 A) B) C) D) Round to 1 dp 0.48 2.8 2.74 3.0 2.7 A) B) C) D) Round to 1 dp 2.75 13.4 13.0 14.0 13.3
"Significant Figures Rounding to Decimal Places 10" is the property of its rightful owner. Permission is granted to
download and print the materials on this website for personal, non-commercial use only, and to display it
on your personal computer provided you do not modify the materials and that you retain all copyright
notices contained in the materials. By downloading content from our website, you accept the terms of this
agreement.
Presentation Transcript
01
Significant Figures<br>
02
Rounding to Decimal Places 10 multiple choice questions<br>
03
0.3 0.4 3 0.35 A) B) C) D) Round to 1 dp 0.34<br>
04
0.5 0.49 0.4 0.47 A) B) C) D) Round to 1 dp 0.48<br>
05
2.8 2.74 3.0 2.7 A) B) C) D) Round to 1 dp 2.75<br>
06
13.4 13.0 14.0 13.3 A) B) C) D) Round to 1 dp 13.374<br>
07
26.5 25.0 26.6 26.0 A) B) C) D) Round to 1 dp 26.519<br>
08
23.18 23.20 23.17 23.10 A) B) C) D) Round to 2 dp 23.1782<br>
09
500.83 500.80 500.84 500.8 A) B) C) D) Round to 2 dp 500.8251<br>
10
0.004 0.00417 0.005 0.00418 A) B) C) D) Round to 3 dp 0.00417<br>
11
5.00 4.99 4.98 4.90 A) B) C) D) Round to 2 dp 4.999<br>
12
0.7300 0.7390 0.7399 0.7210 A) B) C) D) Round to 4 dp 0.72995<br>
13
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<br>
14
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<br>
15
Round to 1 sf Look at the next number It’s more than 4 so we round up! 8 3 7 4 5 3 7 0 0 0 0 0<br>
16
Round to 3 sf Look at the next number It’s less than 5 so we round down! 8 3 7 4 3 7 0 0 0<br>
17
Round to 2 sf Look at the next number It’s more than 4 so we round up! 0 . 0 0 2 8 9 9<br>
18
Round to 3 sf Look at the next number It’s more than 4 so we round up! 0 . 0 0 2 8 7 9 0<br>
19
Rounding to Significant Figures Main
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
