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2 votes
Write them expended number in normal form (1x10)+(2×1)+(4×0.1)+(5×0.01)

2 Answers

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1x10=10
2x1=2
4x0.01=0.04
5x0.01=0.05

10+2=12
0.04+0.05=0.09

12+0.09=12.09
User Croad Langshan
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2 votes
12.45 Simple expanding your tens,ones,
User Pavel Niedoba
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8.1k points

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