Download - Calculomental
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És bom em cálculo mental?
Sim?
Verifiquemos!...
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Vou propor-te algumas operações fáceis de fazer…
para não te destabilizar...
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Estás pronto? Então vamos lá…
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Um autocarro parte, vazio, para a sua volta habitual.
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Na primeira paragem:
entram 15 passageiros.
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O autocarro prossegue...
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Paragem seguinte:
10 passageiros sobem,
12 saem.
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O autocarro reparte...
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Paragem seguinte:
3 passageiros sobem,
5 descem.
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O autocarro segue...
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Paragem seguinte:
11 passageiros entram,
1 desce.
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O autocarro prossegue...
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Paragem seguinte:
5 passageiros entram,
ninguém desce.
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O autocarro reparte...
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Paragem seguinte:
ninguém entra,
3 descem.
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O autocarro segue mais uma vez...
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Paragem seguinte:
ninguém sobe,
5 saem.
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Nova partida...
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Paragem seguinte:
3 passageiros sobem,
2 descem.
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O autocarro prossegue até ao terminal.
Aí, pára.
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Estás pronto para a pergunta?
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Então, já que és tão bom a fazer contas de cabeça...
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...Quantas paragens fez o autocarro???
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