用递等式计算（能简算的请简算）．①328-195÷13+45②10.25+5.89+0.75+4.11③517÷15+115×1217④（3-37×79）÷13⑤（26+26+26）×13⑥[（47-14）×78]÷910．

Question

用递等式计算（能简算的请简算）．

①328-195÷13+45	②10.25+5.89+0.75+4.11
③(5)/(17)÷15+(1)/(15)×(12)/(17)	④（3-(3)/(7)×(7)/(9)）÷(1)/(3)
⑤（26+26+26）×(1)/(3)	⑥[（(4)/(7)-(1)/(4)）×(7)/(8)]÷(9)/(10)．

Answer 1

①328-195÷13+45
=328-15+45
=313+45
=358；

②10.25+5.89+0.75+4.11
=（10.25+0.75）+（5.89+4.11）
=11+10
=21；

③(5)/(17)÷15+(1)/(15)×(12)/(17)
=(5)/(17)×(1)/(15)+(1)/(15)×(12)/(17)
=（(5)/(17)+(12)/(17)）×(1)/(15)
=1×(1)/(15)
=(1)/(15)；

④（3-(3)/(7)×(7)/(9)）÷(1)/(3)
=（3-(1)/(3)）÷(1)/(3)
=(8)/(3)×3
=8；

⑤（26+26+26）×(1)/(3)
=26×3×(1)/(3)
=26；

⑥[（(4)/(7)-(1)/(4)）×(7)/(8)]÷(9)/(10)
=[(9)/(28)×(7)/(8)]÷(9)/(10)
=(9)/(32)×(10)/(9)
=(5)/(16)．