【100道简便运算带答案简单例题】在数学学习中,简便运算是提高计算速度和准确率的重要方法。通过合理运用运算定律和技巧,可以将复杂的计算过程简化,从而节省时间、减少错误。本文整理了100道适合小学生或初中生练习的简便运算题目,并附有详细答案,帮助大家更好地掌握这一技能。
一、加法简便运算
1. 25 + 37 =
2. 48 + 52 =
3. 125 + 75 =
4. 63 + 37 =
5. 99 + 1 =
6. 80 + 20 =
7. 150 + 50 =
8. 32 + 68 =
9. 70 + 30 =
10. 111 + 89 =
答案:
1. 622. 1003. 2004. 1005. 1006. 1007. 2008. 1009. 10010. 200
二、减法简便运算
11. 100 - 45 =
12. 80 - 30 =
13. 150 - 50 =
14. 200 - 100 =
15. 120 - 20 =
16. 90 - 30 =
17. 135 - 35 =
18. 170 - 70 =
19. 210 - 10 =
20. 160 - 60 =
答案:
11. 5512. 5013. 10014. 10015. 10016. 6017. 10018. 10019. 20020. 100
三、乘法简便运算
21. 5 × 12 =
22. 10 × 15 =
23. 25 × 4 =
24. 8 × 10 =
25. 15 × 6 =
26. 20 × 5 =
27. 10 × 10 =
28. 30 × 3 =
29. 4 × 25 =
30. 12 × 5 =
答案:
21. 6022. 15023. 10024. 8025. 9026. 10027. 10028. 9029. 10030. 60
四、除法简便运算
31. 100 ÷ 2 =
32. 80 ÷ 4 =
33. 60 ÷ 5 =
34. 120 ÷ 6 =
35. 200 ÷ 10 =
36. 150 ÷ 5 =
37. 40 ÷ 8 =
38. 30 ÷ 3 =
39. 90 ÷ 9 =
40. 100 ÷ 5 =
答案:
31. 5032. 2033. 1234. 2035. 2036. 3037. 538. 1039. 1040. 20
五、混合运算(加减乘除)
41. 25 + 15 - 10 =
42. 10 × 5 + 20 =
43. 30 ÷ 5 + 10 =
44. 8 × 4 - 12 =
45. 100 - 50 + 10 =
46. 12 × 3 + 12 =
47. 20 ÷ 4 × 5 =
48. 15 + 25 - 10 =
49. 6 × 5 + 10 =
50. 200 ÷ 10 + 10 =
答案:
41. 3042. 7043. 1644. 2045. 6046. 4847. 2548. 3049. 4050. 30
六、运用运算律的简便运算
51. 25 + 37 + 75 =
52. 12 + 28 + 18 =
53. 10 × 12 × 5 =
54. 8 × 25 × 4 =
55. 15 + 25 + 35 =
56. 20 + 30 + 50 =
57. 4 × 25 + 4 × 10 =
58. 100 ÷ 25 × 5 =
59. 12 × 5 + 12 × 5 =
60. 10 × 10 + 10 × 10 =
答案:
51. 13752. 5853. 60054. 80055. 7556. 10057. 14058. 2059. 12060. 200
七、分数与小数简便运算
61. 0.5 + 0.5 =
62. 1.2 + 0.8 =
63. 0.25 × 4 =
64. 0.75 × 4 =
65. 0.5 × 2 =
66. 0.6 + 0.4 =
67. 1.5 + 0.5 =
68. 0.25 + 0.75 =
69. 2.5 × 4 =
70. 0.1 × 10 =
答案:
61. 162. 263. 164. 365. 166. 167. 268. 169. 1070. 1
八、综合简便运算
71. 100 - 25 + 15 =
72. 25 × 4 - 50 =
73. 100 ÷ 5 + 20 =
74. 12 × 5 + 10 =
75. 200 ÷ 10 - 10 =
76. 15 + 25 + 30 =
77. 10 × 10 - 50 =
78. 8 × 10 + 20 =
79. 50 ÷ 5 + 10 =
80. 12 × 5 + 12 =
答案:
71. 9072. 5073. 4074. 7075. 1076. 7077. 5078. 10079. 2080. 72
九、进阶简便运算(含括号)
81. (10 + 20) × 2 =
82. 5 × (10 + 2) =
83. (25 - 10) × 4 =
84. 12 × (5 + 5) =
85. (100 ÷ 10) × 5 =
86. (15 + 5) ÷ 5 =
87. 10 × (10 - 5) =
88. (20 + 30) ÷ 10 =
89. 100 ÷ (10 ÷ 2) =
90. (25 + 25) × 2 =
答案:
81. 6082. 6083. 6084. 12085. 5086. 487. 5088. 589. 2090. 100
十、挑战题(灵活运用)
91. 125 × 8 =
92. 200 ÷ 25 =
93. 1000 ÷ 10 =
94. 12 × 10 + 12 × 5 =
95. 25 × 8 + 25 × 2 =
96. 100 ÷ 5 + 100 ÷ 5 =
97. 50 × 4 - 50 × 2 =
98. 100 ÷ 25 × 10 =
99. 15 × 10 - 15 × 5 =
100. 100 × 2 ÷ 5 =
答案:
91. 100092. 893. 10094. 18095. 25096. 4097. 10098. 4099. 75100. 40
通过以上100道简便运算题目的练习,可以帮助学生逐步掌握运算技巧,提升数学思维能力和计算效率。建议每天练习10-20题,坚持一段时间后,你会发现自己的计算速度和准确率明显提高。