⑴27×35﹣1560÷24
⑵3.82﹣1.54+1.18﹣2.46
⑶×+×37.5%
⑷3.8÷(1.8+1.2÷)
⑸3.2×(2.5×1.25)
⑹÷[3.6×(﹣)]
验算:
﹣0.5= +3= ×= 0.8×=
0.23+177%= 2.5×40= 1÷= ×÷×=