1. 42.8 cm + 16.48 cm + 1.497 cm 12.8 cm + 9.69 cm 2. 39000 N + 19600 N + 8470 N + 2500 N 3. 467 m + 970 cm + 1200 cm + 1352 cm + 300 m 4. 4200 km – 975 km 5. (14.5 cm)(18.7 cm)(20.5 cm) 6. (125 m)(3900 cm) 7. 347 km / 4.6 h 8. 45000 mi /12.3 h

Introductory Chemistry: An Active Learning Approach
6th Edition
ISBN:9781305079250
Author:Mark S. Cracolice, Ed Peters
Publisher:Mark S. Cracolice, Ed Peters
Chapter3: Measurement And Chemical Calculations
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need assistance significant figures 

1. 42.8 cm + 16.48 cm + 1.497 cm 12.8 cm + 9.69 cm
2. 39000 N + 19600 N + 8470 N + 2500 N
3. 467 m + 970 cm + 1200 cm + 1352 cm + 300 m
4. 4200 km – 975 km
5. (14.5 cm)(18.7 cm)(20.5 cm)
6. (125 m)(3900 cm)
7. 347 km / 4.6 h
8. 45000 mi /12.3 h
Transcribed Image Text:1. 42.8 cm + 16.48 cm + 1.497 cm 12.8 cm + 9.69 cm 2. 39000 N + 19600 N + 8470 N + 2500 N 3. 467 m + 970 cm + 1200 cm + 1352 cm + 300 m 4. 4200 km – 975 km 5. (14.5 cm)(18.7 cm)(20.5 cm) 6. (125 m)(3900 cm) 7. 347 km / 4.6 h 8. 45000 mi /12.3 h
Expert Solution
Step 1: How to calculate the correct significant figures in each Answer.

When two or more numbers are added or substrated then your answer should be contains always less decimal place after the point. 

But If two or more numbers are Multiply or divided then your answer should be contains always less significant figures. After that we can say that your answer is correct number of significant figures. 

You can see the calculation part below.  

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