Question

decide whether each proposed addition or subtraction of measurements is possible. if it is possible, write the result in the last column of the table. be sure every answer you enter has the correct unit symbol.
proposed addition or subtraction: 41.0 ms + 38.0 mm =?; is this possible? yes/no; result blank
proposed addition or subtraction: 28.000 mm + 36.000 mm =?; is this possible? yes/no; result blank
proposed addition or subtraction: 18.000 g + 41.000 mg =?; is this possible? yes/no; result blank

Explanation:

Step1: Check units for 41.0 ms + 38.0 mm

Units are different (milliseconds and millimeters). Cannot add.

Step2: Check units for 28.000 mm+36.000 mm

Both are in millimeters. Can add.
$28.000 + 36.000=64.000$ mm

Step3: Check units for 18.000 g + 41.000 mg

Convert mg to g. Since 1 g = 1000 mg, 41.000 mg=$\frac{41.000}{1000}=0.041$ g. Then add: $18.000+0.041 = 18.041$ g

Answer:

Proposed addition or subtraction	Is this possible?	Result
28.000 mm + 36.000 mm	yes	64.000 mm
18.000 g + 41.000 mg	yes	18.041 g