三年级上递等式计算300题

一、递等式计算的重要性与练习方法递等式计算是小学数学学习中的重要基础，它不仅要求学生掌握基本的运算规则，更需要培养清晰的解题思路和规范的书写习惯。对于三年级学生而言，熟练掌握递等式计算能够有效提升运算速度与准确性，为后续更复杂的数学学习奠定坚实基础。建议同学们在练习时，严格按照运算顺序逐步计算，每一步都要书写清晰，养成"一步一回头"的检查习惯，避免因粗心导致的计算错误。二、递等式计算基本规则回顾1.同级运算：在没有括号的算式里，如果只有加减法或者只有乘除法，要从左往右按顺序计算。2.不同级运算：在没有括号的算式里，既有乘除法又有加减法，要先算乘除法，后算加减法。3.带括号运算：算式里有括号的，要先算括号里面的。4.书写规范：等号要对齐，每一步计算结果写在等号后面，未参与当前运算的数字和符号要照抄下来。三、基础巩固篇（100题）（一）只有加减法（30题）1.56+23+172.89-34-253.45+55-304.72-28+435.36+47+186.91-37-267.53+29-418.68-25+399.27+38+2510.80-42-2811.49+36-5712.76-39+2813.33+58+914.95-46-3515.62+29-4516.83-27+3417.41+39+1218.100-53-2719.58+36-4920.79-32+2521.29+56+1522.88-43-2923.65+26-3824.90-36+2825.38+47+1526.77-29-3527.51+39-4428.84-48+3629.43+28+2730.92-54-26（二）只有乘除法（30题）1.8×3×22.72÷8÷33.6×6÷44.48÷6×55.5×7×26.63÷7÷37.9×4÷68.42÷7×49.3×8×310.54÷9÷211.7×5÷512.36÷4×713.4×9×214.81÷9÷315.8×6÷316.28÷4×617.6×8×118.45÷5÷319.9×3÷920.56÷8×321.2×9×422.64÷8÷223.5×6÷324.49÷7×525.7×4×226.50÷5÷227.8×2÷428.32÷4×929.3×6×530.72÷9÷4（三）两步混合运算（不含括号）（40题）1.25+5×62.80-4×73.36÷6+284.50-64÷85.7×9-306.45+27÷37.60-8×58.18+42÷79.9×6+2510.76-36÷411.8×8-4012.24+54÷913.90-5×914.33+21÷315.6×7+3816.85-49÷717.5×5-1218.40+36÷619.70-9×720.16+63÷921.4×8+4222.92-6×823.72÷8+3924.65-30÷525.8×3-1526.57+45÷927.81-7×928.29+18÷229.3×9+5630.88-54÷631.6×9-2732.38+64÷833.75-6×634.52+28÷435.9×5+2336.100-81÷937.7×4-1838.44+30÷639.68-5×540.21+49÷7四、能力提升篇（150题）（一）三步混合运算（不含括号）（50题）1.20+30+5×42.90-40-6×33.15+25÷5+304.80-18÷9-505.6×3+12+206.72-8×4-207.45÷9+36+148.100-7×7-159.5×6+8×210.81-9×5-6×211.36÷6+42÷712.60-12÷3-3513.7×2+18+2514.95-6×6-2015.24÷4+50+1616.88-49÷7-6017.9×4+6×318.90-8×8-5×119.54÷9+28÷420.70-30÷5-4521.3×7+22+3122.85-5×7-2523.63÷7+40+1224.92-64÷8-5825.8×5+7×426.100-9×9-7×127.40÷5+54÷628.76-18÷2-4029.6×6+30+2530.83-7×5-3031.28÷4+19+4332.94-36÷4-6533.5×8+9×234.80-6×6-4×535.64÷8+35÷536.78-25÷5-5537.4×9+26+3538.91-8×7-1839.42÷7+56+2040.86-56÷8-5041.7×8+3×942.96-9×6-3×743.30÷5+48÷844.72-21÷3-5045.5×9+17+3646.89-4×9-3047.72÷8+27+3348.95-54÷6-6249.6×7+8×550.84-7×7-6×3（二）含有小括号的混合运算（50题）1.(25+15)÷82.90-(30+25)3.4×(12-5)4.(80-36)÷45.63÷(3+4)6.28+(40-17)7.5×(6+3)8.(95-50)÷99.72-(8×6)10.(18+27)÷511.6×(25-19)12.80-(49÷7)13.(36+44)÷814.9×(7-4)15.50-(20+25)16.(63-27)÷617.7×(11-5)18.88-(5×9)19.(42+18)÷1020.60-(30÷6)21.(15+33)÷822.9×(6+3)23.76-(28+32)24.(81-54)÷325.5×(16-7)26.90-(64÷8)27.(29+35)÷928.8×(9-2)29.65-(30+20)30.(48+12)÷531.7×(8+1)32.82-(36÷4)33.(55-20)÷734.6×(14-8)35.93-(4×7)36.(22+34)÷637.9×(5-3)38.70-(18+26)39.(60-33)÷340.5×(7+6)41.(38+25)÷742.8×(8-5)43.85-(50-25)44.(72+18)÷945.6×(20-12)46.99-(9×9)47.(45-18)÷348.7×(4+5)49.80-(27÷3)50.(17+43)÷10（三）综合拓展运算（50题）1.25+(30-15)×22.80-18÷(9-6)3.(15+25)÷5+304.6×7+(50-23)5.90-4×(12-5)6.45÷9+(36+14)7.7×(4+5)-288.(88-49)÷7+609.9×4+6×(10-3)10.70-(30+20)÷511.3×7+22+(31-15)12.85-5×7÷513.63÷(7+2)+4014.92-64÷8+1815.8×5+(7×4-10)16.100-(9×9-20)17.(40÷5)+(54÷6)×218.76-18÷2+4019.6×6+(30-12)+2520.83-(5×7+15)21.28÷4+19×(43-36)22.94-(36÷4+15)23.5×8+9×2-2024.80-6×(8-5)-1025.(64÷8)+(35÷5)