Question

add the following number. if u answer this question I will mark u as brainlist ok.

10+10=
20+20
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Answer 1

Answer:

20 , 40

Step-by-step explanation:

First add unit place to ten place

then we have add this

$10 + 10 = 20 + 20 = 40$

Answer 2

Answer:

20

40

Step-by-step explanation:

is that your answer