Add or subtract the following measurement be sure each answer you enter contains the correct number of significant digits

13.677mL+7.70mL=?mL
11.70mL-10.9mL=?mL
17.50mL+5.827mL=?mL

1 answer

13.677mL + 7.70mL = 21.377mL (rounded to 3 significant digits)

11.70mL - 10.9mL = 0.8mL (rounded to 2 significant digits)

17.50mL + 5.827mL = 23.327mL (rounded to 3 significant digits)