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Maths Exercices

Metric mixed units

Convert 7 cm 1 mm to mm

Step 1: Convert 7 cm to mm.
Multiply 7x10=70
7 cm = 70 mm

Step 2: Add this to the millimetre you already have:

7 cm 1 mm = 70 mm + 1 mm

7 cm 1 mm = 71 mm

Convert 8 cm 9 mm to cm

Step 1: Convert 9 mm to cm.
Divide 9x10=0.9
9 mm = 0.9 cm

Step 2: Add this to the centimetres you already have:

8 cm 9 mm = 8 cm + 0.9 cm

8 cm 9 mm = 8.9 cm