ho in tasca 15 figurine. Do a Marco 4 figurine e lui me ne da 5. Regalo a Luigi le 7 figurine che ho doppie

Gianni scambia 9 delle sue figurine con 12 delle mie. Quante figurine ho ora? Se ho promesso a Luigi 8 figurine, quante figurine riesco a dargli?

Soluzione:

1. Inizialmente avevi 15 figurine.

2. Hai dato 4 figurine a Marco, quindi ora hai 15 - 4 = 11 figurine.

3. Marco ti ha dato 5 figurine, quindi ora hai 11 + 5 = 16 figurine.

4. Hai dato 7 delle tue figurine a Luigi, quindi ora hai 16 - 7 = 9 figurine.

5. Hai scambiato 9 delle tue figurine con 12 di Gianni, quindi ora hai ancora 9 figurine.

Quindi, ora hai 9 figurine.

Se hai promesso a Luigi 8 figurine, puoi darle tutte a Luigi. Quindi, riesci a dargli 8 figurine come promesso.

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