判断。
看谁算得快.0.55+0.45= 7﹣1.036= 50×0.25= 0.25×400=1.3+0.13= 6.3×101= 1.5+2.26+0.5= 0.8+0.2﹣0.8+0.2=(5.25﹣4)×8= 4×0.37×0.25=
直接写出得数.0.2×8= 12.5×8= 6.2+0.04= 2.5×0.4=0.6×0.7= 6﹣0.7= 6.4+4.6= 0.04×0.3=0.5×2.4= 2.1﹣2.01= 11.5÷5= 0.4÷8=
直接写得数:5﹣0.32= ; 0.3÷1.5= ; 0.06×1.3= ; 4×4÷4×4= ;5×0.8= ; 12÷6= ; 20×3.6= ; 36×99+36= .
列竖式计算10.73﹣4.64 0.085×0.24 69÷0.46 37.195÷21.5.
直接写得数:4.2+5.08= 7.2÷0.072= 4.3﹣3= 0.75÷1.5=3.6×0.7÷3.6×0.7= 1.05﹣0.95= 2.5×4= 2.5×2.4=3.2﹣1.34﹣1.66= 1÷1.25÷4= 12.8﹣0.28= 1.25×0.8=8.4×5= 5.6﹣5.6÷7= 0.8+0.2﹣0.8+0.2=