小数计算题 用竖式计算 ÷16 ÷7 ÷9 ÷15 ÷36 ÷23 ÷12 ÷7 ÷ 210÷ ÷ ÷ ÷ ÷ ÷ 15÷ × ×96 × × × 5× × × (循环小数的用简便方法,除不尽保留2位小数): ÷ ÷ ÷3 ÷ 32÷42 ÷ ÷ ÷ ÷= (保留三位小数) ÷= (商用循环小数) ÷= (用乘法验算) ×= (用除法验算) 脱式计算(能简算的要简算) ××4 ×99+ ×+ ×99+ ×50× 64-× × ×99+ ×-× + ÷ × - × ×××8 +×99 ×185×40 ×-× +9.37+9.37+9.37)× 2.5 ×+× ×× ×× ×72 ×÷ ÷– +÷ ×99 × × 解方程 X+= =30 = x÷=90 +7x= 3x÷5= =6 12x+8x= 7(x-2)=49 4×8+2x=36 -+= -= 22-=12 -= 12 ÷=8 =56 口算 (一) -= -= += -= -= -= += -= 1-= 187÷1000= 1+= ×10= 75÷10= ×7= ×7= ×8= ×8= = ×2= += ÷= + 5×= ×= ×= ×0= 10×= ×7= ×100= ×4= ×4= 4×= += 7200÷800= += += 600×500= += (二) += += 8500÷500= += += 3500÷70= += 7500÷250= 450+780= = 330×9= += = += += +4= = += += += ×100= 480÷40= ÷100= += 125×80= ÷10= += 70×12= (三) ×100= ×10= 10+= = ×1000= += += ×100= 63÷100= += 80÷1000= += 30×100= += += 5+= = += += += += = = += += (四) 10+= += = += ×8= ×4= ×0= ×50= 本文来源:https://www.wddqw.com/doc/ccf057bb1fb91a37f111f18583d049649a660ed8.html