把下列各数填入适当的圈内。-3,18,-143,0,5,100,4.2
直接写得数.1﹣0.007= 0×0.78= 4×0.9×2.5= 5.2÷0.5÷4=0.87+0.01= 2.5÷0.1= 8×0.5÷8×1.6= 4.8÷0.3=
用自己喜欢的方法计算.(1)5.6×5.3+4.7×5.6 (2)1.25×1.37×80.
直接写出下列各题的得数.12.5×0.8= 3.2÷0.16= 8.8÷2.2=0.8×5×0.2= 0.25×4÷0.25×4= 1.25×16=
计算,怎样算简便就怎样算102×(4.5÷0.09) 19.96×5.4﹣4.4×19.96 3.8+2.49+7.51+4.22.3+3.91÷(22﹣19.7) (1﹣0.2)×[13﹣(3.12+5.28)] 9.9×1.45.
递等式计算,能简算的要简算.4.8×0.25 2.33×0.5×4 1.2×2.5+0.8×2.550.4×1.9﹣1.9 3.7×0.25+4 0.65×201.