2.3 m + 27 cm + 9.3 mm - 3.2 dm = ? m

Change all the numbers into same unit.

●m (x10) →dm (x10) →cm (x10) →mm

●mm (:10) →cm (:10) →dm (:10) →m

27cm:100=0.27M

9.3mm:10=0.93cm:100=0.0093M

3.2dm:10=0.32m

the answer is 2.8993

2.3 m + 27 cm + 9.3 mm - 3.2 dm

Convert all to m:

= 2.3m + 0.27m + 0.0093m + 0.32 m

Add them up:

= 2.8993m

Answer: 2.8993m