1 / 9

Word Problems using Sig. Figs.

Word Problems using Sig. Figs. Word Problems using Sig. Figs. Ex. (1) Find the average of the following lengths: 23.8 cm, 23.7 cm, 23.8 cm, 22.9 cm, 23.1 cm, 23.3 cm, and 23.0 cm . [ when averaging data, use the addition/subtraction rule . ]. 23.8 cm 23.7 cm 23.8 cm

hayley-hill
Download Presentation

Word Problems using Sig. Figs.

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Word Problems using Sig. Figs.

  2. Word Problems using Sig. Figs. Ex. (1) Find the average of the following lengths: 23.8cm, 23.7cm, 23.8cm, 22.9cm, 23.1cm, 23.3 cm, and 23.0 cm. [when averaging data, use the addition/subtraction rule.] 23.8 cm 23.7 cm 23.8 cm 22.9 cm 23.1 cm 23.3 cm + 23.0 cm true number 163.6 cm  7 = 23.37142857 cm 23.4 cm 163.6 cm

  3. Word Problems using Sig. Figs. Ex. (2) What is the volume of a solid block that is 2.7cm long, 1.6cm wide, and 6.3cm high? V = L  W  H V = 2.7 cm  1.6 cm  6.3 cm V = 27.216 cm3 V = 27 cm3

  4. Word Problems using Sig. Figs. Ex. (3) What is the density of the solid block in question #2 if its mass is 72.906 g? d = m V d = 72.906 g 27 cm3 d = 2.700222222 g/cm3 d = 2.7 g/cm3

  5. Word Problems using Sig. Figs. Ex. (4) What is the volume of a solid cylinder that has a radius of 1.46 cm and a height of 7.41 cm? (V = r2h, use 3.14 for ) V = r2h V = 3.14(1.46 cm)2(7.41 cm) V = 49.59678984 cm3 V = 49.6 cm3

  6. Word Problems using Sig. Figs. Ex. (5) What is the density of the solid cylinder in question #4 if its mass is 111.649 g? d = m V d = 111.649 g 49.6 cm3 d = 2.250987903 g/cm3 d = 2.25 g/cm3

  7. Word Problems using Sig. Figs. Ex. (6) If a beaker and a marble have a mass of 120.637 g and the beaker has a mass of 110.427 g, then what is the mass of the marble? m = 120.637 g – 110.427 g m = 10.21 g m = 10.210 g

  8. Word Problems using Sig. Figs. Ex. (7) What would be the mass, in grams, of a solid sample of gold if it were the same size and shape as a standard size basketball which has an official volume of 2250 cm3? d = m V 19.3g/cm3 = X 2250 cm3 1 X = 43425 g X = 43400 g

  9. Word Problems using Sig. Figs. Ex. (8) What would be the mass, in lbs, of the gold sample from question 7? [1.00 lb = 454 g] ____________ = ____________ X 43400 g Cross multiply and then divide 1.00 lb 454 g X = 95.81497797 lbs X = 95.6 lbs

More Related