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_________________________________________ _________________________________________ _________________________________________ _________________________________________1.1: Measurement and Significant Figures Day 3Objective: SWBAT Determine the number of significant figures in a calculated resultRound a given measurement to a certain number of significant figures_________________________________________________________________________________EXPECTATIONSON YOUR DESK1. Place proper materials on your desk 1. Your chemistry binder2. Fill in MLA heading2. Two sharpened writing utensils3. Sit at SLANT3. This learning ladder4. Silently and immediately begin the “Do Now”4. Your homework folder5. Calculator_________________________________________________________________________________Do NowUsing the rules for significant figures, determine the number of significant figures in each of the measurements below.6.84 cm43.096 mL12.220 g0.00052 km100 kg34.6480750 LRounding the number of significant figures (I do)When doing calculations, your answer cannot be more precise than your _______________ piece of data (least # of sig figs).Steps to rounding significant figures: Example: Round 0.089 to 2 significant figures.Round 1253 to 3 significant figures.Rounding with sig figs (We do)Round each number to two significant figures.5.432 g40.319 g146 cm33.285 cm0.189 kg429.3 g99.9 cm3Calculations with Significant Figures (I Do)Steps for solving Multiplication/Division problems:_____________ the problem.Find the measurement from your starting numbers with the ________________ number of sig figs.____________ your answer to match that number of ____________________.Examples:2.89×4.01=17.3×6.2 =3.08×1.2=5.00×7.3216=5×5=8.0751÷4.216=Steps for solving Addition/Subtraction problems:_____________ the problem.Find the measurement from your starting numbers with the _____________ number of decimals.____________ your answer to match that number of ________________________.Examples:5.204+41.3+0.9937=0.6366+1.500+8.807=98.45-70=0.00318+0.0010-0.0004=Putting it all together! (You do)Indicate the number of significant figures in each of the following:0.00100 m2.0800 x 102 L480 Corvettes1000 g1000. gRound each of the following numbers to three significant figures:931017896.004921 ................
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