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**Measurement and Sig. Fig. Practice**

A. Identify the number of significant digits in each of the following measurements. Write the number in the space provided. Write the numbers that are not exponents in scientific notation below. ml _______ ns _______ ms _______ x 1012 m _______ L _______ Pa _______ 4. 25,600 L _______ _______ Consult your text as needed for a reminder on sig fig rules!

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**2. 125.5 kg + 52.68 kg + 2.1 kg =___________**

B. Perform the following calculations and round off the answer to the correct number of significant digits. When multiplying and dividing round to the fewest number of significant figures, when adding and subtracting round to the fewest decimal places. When you need to do both, follow the proper mathematic order of operations and round for each part, do not wait to round until the end. g x 45.2 g = ___________ kg kg kg =___________ g/ ml = ___________ Pa Pa = ___________ 253.4 Pa

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**C. Convert the following measurements using dimensional analysis.**

cg to kg in to mm qt to L mg to lbs

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**D. Measure and record the following using the information given:**

1. Find an 3x5 index card and record the length and width in cm. 2. Determine the mass and cylinder below.

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