Dr. Mann mixed 9.357 grams of Chemical A, 12.082 grams of Chemical B, and 7.502 grams of Chemical C to make 5 doses of medicine.
About how much medicine did he make in grams? Estimate the amount of each chemical by rounding to the nearest tenth of a gram before finding the sum.
You may use the line tool to create vertical number lines. This will help you round each amount to the nearest tenth. When you finish rounding, remember to find the sum of all the rounded numbers.