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Name: __________________________________ Period: _________ Date: _________ 1. If 1 g = 15.432 grains, and 1 cg = 0.000353 ounces, then how many ounces is 17500. grains? 2. If 1 m = 3.2808 ft., how many yards are in 1 m? 3. If 1 cL = 0.338 fluid ounces and 1 L = 0.264 gallon, how many fluid ounces are in 1 gallon? 4. The speed limit on interstate highways is 65 mi/h. Convert this speed in inches/s. Section 1: Counting Sig Figs Practice Write the number of significant figures that each of the following has 700004 50.0 50 007 0.01560 072.0 3409.080 00.00021 Section 2: Math using sig figs Addition and subtraction 56.10 + 11.907 3.00 + 5.16 53.2 + 92.77 98.023 x 32.76 39.0 x 1.8 Multiplication and division 44.1 x 7.90 Section 3: Writing scientific notation Rewrite these numbers in scientific notation 4860000000 0.000000000002056 0.00000679 Rewrite these numbers in decimal/standard form 9.012 x 105 2.80 x 10-6 8.901 x 10-11 7.0012 x 1010 7.440 x 10-3 6.290 x 101 Section 4: Density Calculations You have a rock with a volume of 15cm3 and a mass of 45 g. What is its density? You decide you want to carry a boulder home from the beach. It is 30 centimeters on each side (it looks like a cube),. It is made of granite, which has a typical density of 2.8 g/cm3. How much will this boulder weigh? Crayon: _____________________ Pencil: ______________________ Liquid in graduated cylinder: _______________________