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Bernardo
a) 7 x 10000 + 8 x 100 + 9 x 10 =
b) 9 x 100000 + 7 x 1000 + 5 x 1 =
c) 5 x 100000 + 6 x 1000 =
d) 3 x 1000000 + 2 x 10000 =
Escrita por extenso:
10 000 + 5 x 10 =
3 x 10000 + 3 x 100 =
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