小学生们学习加减法时,最基本的能力就是脱式计算。今天,我们来练习100以内的加减法脱式计算。
首先,我们需要掌握基本的计算方法。对于加法,我们可以先将个位数相加,如果和大于等于10,那么就要进位,将十位数加上1。然后再将十位数相加,如果和大于等于10,还要进位,将百位数加上1。对于减法,我们则需要先将被减数的各位数减去减数的各位数,如果不够减,就要向高位借位。然后再将高位数相减,如果不够减,还要向更高位借位。最后得到的结果就是答案。
接下来,我们来练习100道加减法题目。这些题目随机出现,需要我们认真思考,仔细计算。不要怕错,多做几次就会熟练掌握了。
1. 23 + 45 =
2. 67 - 23 =
3. 12 + 34 =
4. 56 - 34 =
5. 89 + 11 =
6. 45 - 12 =
7. 56 + 23 =
8. 78 - 56 =
9. 90 + 10 =
10. 87 - 23 =
11. 45 + 55 =
12. 67 - 34 =
13. 23 + 67 =
14. 80 - 23 =
15. 56 + 44 =
16. 90 - 56 =
17. 34 + 66 =
18. 78 - 23 =
19. 23 + 23 =
20. 56 - 23 =
21. 12 + 78 =
22. 90 - 34 =
23. 23 + 34 =
24. 78 - 34 =
25. 56 + 23 =
26. 90 - 23 =
27. 12 + 56 =
28. 67 - 23 =
29. 23 + 45 =
30. 56 - 12 =
31. 34 + 45 =
32. 67 - 45 =
33. 23 + 78 =
34. 90 - 45 =
35. 56 + 34 =
36. 78 - 23 =
37. 23 + 56 =
38. 67 - 12 =
39. 45 + 23 =
40. 56 - 34 =
41. 12 + 67 =
42. 89 - 23 =
43. 23 + 23 =
44. 78 - 56 =
45. 56 + 23 =
46. 90 - 23 =
47. 23 + 34 =
48. 67 - 23 =
49. 12 + 45 =
50. 56 - 12 =
51. 23 + 67 =
52. 78 - 45 =
53. 56 + 45 =
54. 90 - 56 =
55. 23 + 56 =
56. 67 - 34 =
57. 12 + 34 =
58. 56 - 23 =
59. 23 + 45 =
60. 78 - 34 =
61. 56 + 67 =
62. 90 - 23 =
63. 23 + 23 =
64. 45 - 23 =
65. 78 + 12 =
66. 90 - 67 =
67. 23 + 56 =
68. 56 - 45 =
69. 12 + 67 =
70. 78 - 12 =
71. 23 + 34 =
72. 67 - 23 =
73. 45 + 45 =
74. 56 - 34 =
75. 12 + 56 =
76. 89 - 23 =
77. 23 + 45 =
78. 67 - 56 =
79. 56 + 23 =
80. 78 - 45 =
81. 23 + 78 =
82. 90 - 12 =
83. 34 + 67 =
84. 56 - 12 =
85. 12 + 23 =
86. 78 - 34 =
87. 23 + 56 =
88. 67 - 23 =
89. 45 + 23 =
90. 56 - 34 =
91. 12 + 67 =
92. 90 - 23 =
93. 23 + 67 =
94. 78 - 45 =
95. 56 + 45 =
96. 90 - 56 =
97. 23 + 45 =
98. 67 - 12 =
99. 12 + 34 =
100. 56 - 23 =
通过练习这100道题目,相信大家的脱式计算能力会得到很大的提高。当然,这只是起点,我们还需要不断地练习,才能真正掌握100以内的加减法脱式计算。
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