Question

Add
9 cm 8 mm and 61 mm

Answer 1

15.9 cm

Explanation:

Add

9 cm 8 mm and 61 mm

9 cm + 8 mm + 61 mm

• we add the millimeters

61 + 8 = 69 mm

• transform millimeters into centimeters (1 cm = 10 mm)

69 : 10 = 6.9 cm

• we add the centimeters

9 + 6.9 =

15.9 cm