直接写得数.
698+560= 1200﹣909= 1.3+0.41= 500÷5÷20=
2.7﹣1.58= 2.5×0.4= 1.4÷3.5= 3.65+0.36×0=
452.4÷48.9≈ 201.2×39≈ = =
1.65+0.8= 3.6﹣0.36= 1÷= 8.4+99×8.4=
= = = =