<p>(1) <b>Calcola, prestando attenzione alle parentesi</b> </p> <table class='table table-bordered table-striped'> <tr> <td>(§§V1(40,50,1)§§ + §§V2(2,10,2)§§) + §§V3(2,10,2)§§ =</td> <td>(§§V4(60,70,1)§§ + §§V5(2,7,1)§§) + §§V6(5,10,1)§§ =</td> <td>(§§V7(80,90,1)§§ + §§V8(5,10,1)§§) + §§V9(5,10,1)§§ =</td> <td>§§V10(5,10,1)§§ + (§§V11(70,80,1)§§ + §§V12(5,10,1)§§) =</td> </tr> <tr> <td>§§V13(5,10,1)§§ + (§§V14(30,40,1)§§ + §§V15(10,20,2)§§) =</td> <td>§§V16(5,10,1)§§ + (§§V17(50,60,1)§§ + §§V18(5,10,1)§§) =</td> <td>(§§V19(30,40,1)§§ + §§V20(10,20,2)§§) + §§V21(5,10,1)§§ =</td> <td>§§V22(5,10,1)§§ + (§§V23(40,50,1)§§ + §§V24(5,10,1)§§) =</td> </tr> </table> <p>(2) <b> Calcola:</b></p> <table class='table table-bordered table-striped'> <tr> <td>§§V28(40,50,1)§§ + <input type="text" style="width: 50px;"> = §§V29(60,70,1)§§</td> <td><input type="text" style="width: 50px;"> + §§V30(40,60,1)§§ = §§V31(90,100,1)§§</td> <td>§§V32(60,70,1)§§ − <input type="text" style="width: 50px;"> = §§V33(20,30,1)§§</td> <td><input type="text" style="width: 50px;"> − §§V34(10,30,1)§§ = §§V35(60,70,1)§§</td> </tr> <tr> <td>§§V36(20,30,1)§§ + <input type="text" style="width: 50px;"> = §§V37(80,90,1)§§</td> <td><input type="text" style="width: 50px;"> + §§V38(50,60,1)§§ = §§V39(80,90,1)§§</td> <td>§§V40(90,100,1)§§ − <input type="text" style="width: 50px;"> = §§V41(30,40,1)§§</td> <td><input type="text" style="width: 50px;"> − §§V42(60,80,1)§§ = §§V43(20,30,1)§§</td> </tr> <tr> <td>§§V44(50,60,1)§§ + <input type="text" style="width: 50px;"> = §§V45(90,100,1)§§</td> <td><input type="text" style="width: 50px;"> + §§V46(70,80,1)§§ = §§V47(90,100,1)§§</td> <td>§§V48(70,80,1)§§ − <input type="text" style="width: 50px;"> = §§V49(30,40,1)§§</td> <td><input type="text" style="width: 50px;"> − §§V50(50,70,1)§§ = §§V51(30,40,1)§§</td> </tr> </table> <p>(3) <b> Sottrai e verifica con l'addizione </b></p> <table class='table table-bordered table-sm'> <tr> <td>§§V52(60,95,1)§§ − §§V53(20,40,10)§§ = §§( §§V52(60,95,1)§§ - §§V53(20,40,10)§§ )§§</td> <td>perché §§( §§V52(60,95,1)§§ - §§V53(20,40,10)§§ )§§ + §§V53(20,40,10)§§ = §§V52(60,95,1)§§</td> <td>§§V55(70,80,1)§§ − §§V56(20,40,10)§§ = <input type="text" style="width: 50px;"></td> <td>perché <input type="text" style="width: 50px;"> + §§V56(20,40,10)§§ = <input type="text" style="width: 50px;"></td> </tr> <tr> <td>§§V57(80,90,1)§§ − §§V58(20,40,10)§§ = <input type="text" style="width: 50px;"></td> <td>perché <input type="text" style="width: 50px;"> + §§V58(20,40,10)§§ = <input type="text" style="width: 50px;"></td> <td>§§V59(90,95,1)§§ − §§V60(30,50,10)§§ = <input type="text" style="width: 50px;"></td> <td>perché <input type="text" style="width: 50px;"> + §§V60(30,50,10)§§ = <input type="text" style="width: 50px;"></td> </tr> <tr> <td>§§V61(50,60,1)§§ − §§V62(20,30,10)§§ = <input type="text" style="width: 50px;"></td> <td>perché <input type="text" style="width: 50px;"> + §§V62(20,30,10)§§ = <input type="text" style="width: 50px;"></td> <td>§§V63(40,50,1)§§ − §§V64(20,30,10)§§ = <input type="text" style="width: 50px;"></td> <td>perché <input type="text" style="width: 50px;"> + §§V64(20,30,10)§§ = <input type="text" style="width: 50px;"></td> </tr> <tr> <td>§§V65(70,80,1)§§ − §§V66(20,30,10)§§ = <input type="text" style="width: 50px;"></td> <td>perché <input type="text" style="width: 50px;"> + §§V66(20,30,10)§§ = <input type="text" style="width: 50px;"></td> <td>§§V67(40,80,1)§§ − §§V68(10,30,10)§§ = <input type="text" style="width: 50px;"></td> <td>perché <input type="text" style="width: 50px;"> + §§V68(10,30,10)§§ = <input type="text" style="width: 50px;"></td> </tr> </table> (4) <b>Bonus</b> <table class="table table-condensed"> <tr> <td style="width: 66%"> Il capitano <b>§§M0§§</b> andò a pescare. Per prima cosa, catturò §§V20(10,20,2)§§ pesci colorati nella sua rete. Poco dopo, mentre navigava vicino a una barriera corallina, catturò altri §§V2(2,10,2)§§ pesci blu. <p>(a) Quanti pesci in totale ha catturato il capitano §§M0§§?</p> Dopo di che, mentre tornava al porto, diversi gabbiani volavano in cerchio sopra la barca. Un gabbiano afferrò §§V3(2,10,2)§§ pesci dalla rete. <p>(b) Quanti pesci sono rimasti nella rete del capitano §§M0§§?</p> Infine, quando arrivò al porto, il suo amico <b>§§M1§§</b> gli diede altri §§V15(10,20,2)§§ piccoli pesci argentati che aveva pescato lui stesso. <p>(c) Quanti pesci in totale ha ora il capitano §§M0§§?</p> (d) Domanda aggiuntiva sotto l'immagine (per chi ne vuole di più) → </td> <td style="width: 34%" > <img src="https://mathkiss.com/uploads/fish2.png" class="img-fluid" style="max-width: 220px;" > <br /> Se il capitano §§M0§§ decidesse di dare metà di tutti i suoi pesci alla sua gatta di nome §§Fm2§§, quanti pesci riceverebbe §§Fm2§§? </td> </tr> </table>