15 24 35 40 53 78 92 100 54 45 88 60
10÷2.5= 2.4×0.5= -0.25=
0.88+0.2= 3.85-1.76= 1÷0.1-1×0.1=
0.8×0.125= 2.5×(4+0.4)= 1÷1.25=
2.5+7.5÷10= 11.96÷12≈ (凑整到百分位)
①12.5×(8+0.8)
②+×
③+÷
④26﹣7.28﹣12.72
⑤5.8×4.1+5.9×5.8
⑥÷(+1.4×)