Add the following numbers (pay attention to units!).  Give your answer in the correct number of significant figures, not in scientific notation. 1.87e3 m   +   24 m  +  5.43e-1 km + 1.561e2 km =                        km

The distance between the red and green balls at the corners of this cube is 437. pm: Calculate the distance between the red and blue balls. Round your answer to 3 significant digits, and be sure it has the correct unit symbol. 0 0 ☐x10 0.0 X 3 00

Suppose you are trying to find the volume of a box based on the given measurements for the length, width, and height of the box, where the height was measured in two parts.      length, l = 2.20 in      width, w = 3.71 in      height, h = 10.4 in + 1 in Calculate the height, ℎ, of the box, first keeping all digits, then rounding to the proper number of significant figures. unrounded h = ____in rounded h =____  in  Calculate the volume (V) of the box using V =l x w x h. Round to the proper number of significant figures.  v=_____in3

How many miles in 1.2 x 104 yards? Along with the conversions from your equation sheet, you will need to know that 3 ft = 1 yard (this conversion is exact). Enter your unit as mi.  Make sure you include the appropriate units and significant figures. Write your work using dimensional analysis

Multiply or divide the following measurements. Be sure each answer you enter contains the correct number of significant digits. 0.93 20.9476 g mL g mL X 4.15 mL x 35. mL = 511.0 g 0.81 mL = 0 g g mL x10 X Ś

I don't understand the wording. The least significant digit means the last digit?  7.700 X 2.1 = 16.17     would the uncertainty be  0.01 ? 2.132 + 17 + 4.04 = 23.172   would the uncertainty be 0.001 ?

Multiply or divide the following measurements. Be sure each answer you enter contains the correct number of significant digits. 363.3 mol 0.63 L 542.6 mol 32.72 L 7.8084 cm X 2.125 cm 10 mol L mol L cm² x10 X