文档介绍：寒假作业-脱式计算题(每天3题x20天)17440÷2++410321×+22×422149×4+4202×80÷+14772÷8+24030÷36÷202+95÷120×25921+7×66×5+774877981÷+4+20÷2807770÷7+656×80×2735÷-35302550÷-100+230×600×8÷340+100÷5434+25×560-12×364÷8+456640+60×4972÷-5500×(400-396)36÷56÷7+665×7650-(546+4530)564+264-4539-4509000-(4500+250)9×80+9806700+72÷86+9×14×59-42÷900÷(71-68)180÷6+612÷45×3(910-720)8×760-540+11106500+1250-350080×30+56009450-3200-42002400÷6-45800×7-1801600÷2+230270÷3×964320÷8+8+3504000÷92800+32×6300÷630÷9+3206×(54÷9×8(6900-2400)÷5(56÷)72÷9÷8)4÷280×560×8+157060×(23-17)+422×221410+21×3174+40÷2147+72÷89×4+4202×80÷4120×5÷2202+36÷930÷5+24081÷9+87766×5+774921+7×4807+20÷2770÷7+65280×6×35÷35-7-10050÷5+30230×23600×8÷5434+25×+40100÷545664÷8+640+12×60-360×4+419×866-748÷+42÷736÷37×5×4-10×420÷42÷525÷+610÷315÷+578×535÷+54÷421×-96-72÷936÷59×+72÷821×+436÷2416÷525÷-5636÷756÷+-972÷396)-(400500×564+264-4537650-(546+4530)65×9-4509×80+9809000-(4500+250)6700+72÷814×6+9×5900÷(71-68)180÷9-42÷612÷6+45×38×(910-720)760-540+11109450-3200-42006500+1250-350080×30+56001600÷2+230800×-2400÷6457-1803×9270÷+320÷8644000÷8+350300÷96×2800+32×6630÷9+320(854÷9×5(6900-2400)÷8)72÷9)÷(56÷4÷280×560×(23-17)60×8+1570450÷5+12509350÷9960÷4×5×66×+30905(6900-2400)÷520×+1575÷