- 我会口算。0.1×0.1=5÷0.5=5.6÷1.4=3.6×2-3.6=0÷0.34=0.36÷3=0.56÷0.8=7÷0.35=
- 甲、乙两个修路队合修一条被洪水摧毁的95 千米长的公路,甲队修公路的长度是乙队的1.5 倍。甲、乙两队各修了多少千米?
- 直接写出得数。1.8×3=75÷30=0.12×7=7.2+6.5÷1.3=9.6÷8+1.2=12.5×0.8=90÷0.15= 19.19÷1.9=4.2×2÷2.1=2.5×(0.4+0.04)=
- 递等式计算。(能简便计算的可用简便方法计算)(1)9.37﹣4.7+0.63(2)4.05÷0.81+4.2(3)0.125×32×0.25(4)4.8×99+4.8(5...
- 脱式计算。(能简算的要简算)(1)66.86-8.66-1.34(2)0.25×16.2×4(3)7.09×10.8-0.8×7.09(4)(74-3.6)÷2.5÷4
- 直接写出得数。0.46+0.34=1﹣0.78=2.7×3=9.3÷0.93=0.25×0.7×4=0.54÷18=0.025×4.4=7.38﹣5.88=0.4+0.4÷0.1=8.2÷8.2+8.2=
- 计算下面各题,能简算的用简便方法计算。18.9×9.912.5×8.94×0.87.4×0.5+7.4÷0.54.92÷2.46.8×32+32×3.2(8.1-5.6)÷0.8+7.755....
- 我能算得又快又对。0.25×40=8.4÷2.1=0.9×0.5=13.2÷0.1=1÷0.01=0.64÷8=0.5×0.2=1-0.12=0.12÷0.3=9-9×0.1=1.8+0.2×3=3×0.125×8=
- 能简算的要简算(1)25×32×1.25=(2)13.68-0.82-4.18=(3)×+÷=(4)99×99=(5)1.8×(5.7-3.44÷0.8)=(6)÷[×(1-)]=
- 彩带购买的米数与购买的价钱为:把表中长度和价钱所对应的点描在上图坐标上,再依次连接起来,并回答下列问题:(1)所描的点...
- 计算下列各题。(1)258-79-21(2)2.5×1.7×4(3)(4)
- 直接写出得数。+=0.88+0.22=5÷0.01=0.46×10=6÷3%===
- 直接写得数。170×30=1-0.375=0.5÷0.25==×24=3.14×5==
- 口算。35+417=51.8-34.9=1000÷8=2.5×0.8==710-82=2.6+4=2-===
- 直接写出得数。3.2 ÷0.4 =1.5 ×0.9 =1.38 + 4×2.5 =1.6×4+1.6 =