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26-10-2020
Mathematics

contestada

Calculate 3cm ,4cm, 10cm and 2cm

Respuesta :

26-10-2020

Answer:

19cm

Step-by-step explanation:

(chose one way)

1. way using commutativity

(3cm+4cm)+(10cm+2cm)=7cm+12cm=19cm

2. way just writing

3cm+4cm+10cm+2cm=19cm

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