0.81+15.3= 1300﹣497= 3﹣1/2= 3/4+0.72=1÷0.04= 1/8÷0.625= 4.5×4/15= :=1.5+2/3×3= 1﹣1/3×2/5= 1.25×0.36×8= 1÷(2﹣2.09)=
.
计算,能简算的要简算. (1)1.21﹣﹣ (2)150÷2+150÷7.5 (3)1.27÷[1÷(3.1﹣3)] (4)58.3×1.6+1×41.7.
直接写得数. 0.36+1.3=10.2﹣5.8=1﹣0.6=2﹣0.03=0.8+3.62= 0.01+1.1=0÷64=25×89×4=120÷5÷3=78﹣35÷5=
计算下面各题(能简算的要简算). 3﹣(125+)×8 4.5×80%+80%×5.5+×270.
脱式计算: (+)÷+(0.75﹣)×(+)÷×0.642﹣÷﹣.