3cdot 9-11= 3cdot 5+3= 4cdot 1+16= 4cdot 3+18= 2cdot 3+10= 8:4+14= 1cdot 2+10= 2cdot 6+17= 4cdot 8-14= 3cdot 5-15= 27:3+11= 9:1+7= 9:3+17= 2cdot 5+10= 4cdot 1+9=

Vamos resolver cada expressão:<br /><br />1. $3\cdot 9-11 = 27 - 11 = 16$<br />2. $3\cdot 5+3 = 15 + 3 = 18$<br />3. $4\cdot 1+16 = 4 + 16 = 20$<br />4. $4\cdot 3+18 = 12 + 18 = 30$<br />5. $2\cdot 3+10 = 6 + 10 = 16$<br />6. $8:4+14 = 2 + 14 = 16$<br />7. $1\cdot 2+10 = 2 + 10 = 12$<br />8. $2\cdot 6+17 = 12 + 17 = 29$<br />9. $4\cdot 8-14 = 32 - 14 = 18$<br />10. $3\cdot 5-15 = 15 - 15 = 0$<br />11. $27:3+11 = 9 + 11 = 20$<br />12. $9:1+7 = 9 + 7 = 16$<br />13. $9:3+17 = 3 + 17 = 20$<br />14. $2\cdot 5+10 = 10 + 10 = 20$<br />15. $4\cdot 1+9 = 4 + 9 = 13$<br /><br />Portanto, as respostas corretas são:<br /><br />1. 16<br />2. 18<br />3. 20<br />4. 30<br />5. 16<br />6. 16<br />7. 12<br />8. 29<br />9. 18<br />10. 0<br />11. 20<br />12. 16<br />13. 20<br />14. 20<br />15. 13