Question

(i)
Express 45 mm in cm, m and km.

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Answer 1

Answer:

4.5cm, 0.045m, 0.000045km

Step-by-step explanation:

1mm = 0.1cm  45mm = 4.5cm

1mm = 0.001m  45mm = 0.045m

1mm = 0.000001km  45mm = 0.000045km

Hope this helps

Answer 2

answer:

4.5cm

0.045m

0.000045km

Step-by-step explanation:

Hey there!

Here is the solution step by step.

(using unitary method)

1 mm = 1/10 cm

45 mm = 1/10×45

= 9/2

= 4.5cm

1 mm = 1/1000 m

45 mm = 1/1000× 45

= 0.045m

Hope it's helpful for you!

1 mm = 1/1000000 m

45 mm = 1/1000000× 45

= 0.000045km