Question

Express as centimetres using decimals:
(1)5mm (2)30mm​

Answer 1

Answer:

1) 0.5 cm

2) 3 cm

Step-by-step explanation:

1) 1mm = 0.1 cm

5mm = 0.5 cm

2) 1mm = 0.1 cm

30 mm = 3 cm

Answer 2

1. 5mm = 0.5 cm

2. 30mm = 3 cm

Explanation:

To find:

1. 5 mm =?

2. 30 mm =?

we know that,

1 mm = 0.1 cm

0.1 is a fraction 1/10

1) 5mm

  Using Decimal

  1 mm = 0.1 cm

  Multiply by 5 with both sides

  5 mm = 0.5 cm

 Using fraction to decimal

  1 mm = 1/10

  5 mm = 5/10

  5 mm = 1/2

  5 mm = 0.5 cm

 

2) 30mm

    Using Decimal

    1 mm = 0.1 cm

    Multiply by 30 on both sides

    30 mm = 3 cm

 

    Using fraction to decimal

    1 mm = 1/10 cm

    30 mm = 30/10 cm

    30  mm = 3 cm