Question

Jordan has 5.48 mL of liquid in one test tube and 9.63 mL in another. Luke's test tube has 17.24 mL of liquid.

Answer 1

5.48 to the nearest tenth is 5.5
9.63 is closest to 9.6
17.24 is closest to 17.2

5.5+9.6=15.1
17.2-15.1=2.1

Answer 2

B.2.1 because you could round each number the using addition