15.89+(6.75-5.89)
5.17-1.8-3.2
13.75-(6.48+3.75)
3.68+7.56-2.68
7.85-(2.34-0.15)
35.6-1.8-15.6-7.2
213.6÷0.8÷0.3
32.8×10.5÷0.6
16.5÷5.5×1.7
①1.36×4.5+0.64×4.5
②5.4-0.45÷1.5
③8.8×1.25
④76.81-3.4×(7.5-6.05)
⑤(2.7+2.7+2.7+2.7)×0.25
①(3618÷18-145)×20
②6÷ - ÷6
③(21+ )× +
④ ×[ ÷( - )]
⑤3.5×98+35×0.2