Unit 1 Lesson 5 Significant Figures Significant Figures

Unit 1, Lesson 5: Significant Figures

Significant Figures

Quick Check • Which would you use to measure 20. 0 m. L?

Quick Check • Using this scale, to how many significant figures could a person weighing around 70 kg determine their mass? 3 4

Calculator Tips • The “Exp” button means “x 10^” • If you have a number like 0. 0000000453 showing on the screen, don’t assume it ends there!

Brain Break!

Sig Fig Race! • Form a team of three people. • As a team, you will race against other teams to hold up cards that show the correct answer to each question. • Each team is permitted ONE calculator, and you must switch which team member is using the calculator each round. • Here we go. . .

Sig Fig Race! • How many significant figures are in 1, 500?

Sig Fig Race! • How many significant figures are in 1, 500. 01?

Sig Fig Race! • How many significant figures are in 0. 00673927?

Sig Fig Race! • How many significant figures are in 10?

Sig Fig Race! • How many significant figures are in 1308. 7?

Sig Fig Race! • What is 60 + 83. 2, using significant figures?

Sig Fig Race! • What is 0. 158 + 0. 4, using significant figures?

Sig Fig Race! • What is 0. 11 – 2. 2, using significant figures?

Sig Fig Race! • What is 494 + 30, using significant figures?

Sig Fig Race! • What is 9. 8070 – 404. 08, using significant figures?

Sig Fig Race! • What is 610 ÷ 9. 1, using significant figures?

Sig Fig Race! • What is 4. 59 X 3. 201, using significant figures?

Sig Fig Race! • What is 0. 009 X 19. 5, using significant figures?

Sig Fig Race! • What is 30700 ÷ 67000, using significant figures?

Sig Fig Race! • What is 851. 796 X 742. 95, using significant figures?

Sig Fig Race! • Give a number between – 1 and 1 that has 5 significant figures.

Sig Fig Race! • Give a number greater than 100 that has 2 significant figures.

Sig Fig Race! • Give a number that is 4 digits but only has 3 significant figures.

Sig Fig Race! • Give a number between 5 and 6 that has 3 significant figures.

Sig Fig Race! • Give a number less than 40 that has 6 significant figures.

Sig Fig Race! • And the winners are. . .

Homework: • Significant Figure Calculations worksheet