如何快速算100以内的乘除法 求100以内乘除法口诀练习题
\u5982\u4f55\u5feb\u901f\u7b97100\u4ee5\u5185\u7684\u4e58\u9664\u6cd5\u4e8c\u4f4d\u6570\u4e58\u6cd5\u901f\u7b97\u603b\u6c471\u3001\u4e24\u4f4d\u6570\u7684\u5341\u4f4d\u76f8\u540c\u7684\uff0c\u800c\u4e2a\u4f4d\u7684\u4e24\u6570\u5219\u662f\u76f8\u8865\u7684\uff08(1)94\u4e0e100\u76f8\u5dee\u4e3a6(2)\u5dee\u65706\u7684\u5e73\u65b936\u5199\u5728\u4e2a\u4f4d\u548c\u5341\u4f4d\u4e0a(3)\u752894\u51cf\u53bb
1. 3/7 \u00d7 49/9 - 4/3
2. 8/9 \u00d7 15/36 + 1/27
3. 12\u00d7 5/6 \u2013 2/9 \u00d73
4. 8\u00d7 5/4 + 1/4
5. 6\u00f7 3/8 \u2013 3/8 \u00f76
6. 4/7 \u00d7 5/9 + 3/7 \u00d7 5/9
7. 5/2 -\uff08 3/2 + 4/5 \uff09
8. 7/8 + \uff08 1/8 + 1/9 \uff09
9. 9 \u00d7 5/6 + 5/6
10. 3/4 \u00d7 8/9 - 1/3
11. 7 \u00d7 5/49 + 3/14
12. 6 \u00d7\uff08 1/2 + 2/3 \uff09
13. 8 \u00d7 4/5 + 8 \u00d7 11/5
14. 31 \u00d7 5/6 \u2013 5/6
15. 9/7 - \uff08 2/7 \u2013 10/21 \uff09
16. 5/9 \u00d7 18 \u2013 14 \u00d7 2/7
17. 4/5 \u00d7 25/16 + 2/3 \u00d7 3/4
18. 14 \u00d7 8/7 \u2013 5/6 \u00d7 12/15
19. 17/32 \u2013 3/4 \u00d7 9/24
20. 3 \u00d7 2/9 + 1/3
21. 5/7 \u00d7 3/25 + 3/7
22. 3/14 \u00d7\u00d7 2/3 + 1/6
23. 1/5 \u00d7 2/3 + 5/6
24. 9/22 + 1/11 \u00f7 1/2
25. 5/3 \u00d7 11/5 + 4/3
26. 45 \u00d7 2/3 + 1/3 \u00d7 15
27. 7/19 + 12/19 \u00d7 5/6
28. 1/4 + 3/4 \u00f7 2/3
29. 8/7 \u00d7 21/16 + 1/2
30. 101 \u00d7 1/5 \u2013 1/5 \u00d7 21
1.\u53e3\u7b97\u4e0b\u9762\u5404\u9898
(1)58+42= (2)87\uff0d45= (3)125\u00d78=
(4)50\u00d712= (5)804\u00f74= (6)134\uff0b66=
(7)1000\uff0d98= (8)720\u00f75= (9)0\u00f747=
2.\u5148\u586b\u5199\u4e0b\u9762\u5404\u9898\u7684\u8fd0\u7b97\u987a\u5e8f\uff0c\u518d\u8ba1\u7b97\u51fa\u5f97\u6570\u3002
(1)168+36\uff0d36+32=
(2)153\uff0d5\u00d714+83=
(3)50\u00d75\u00f750\u00d75=
4.\u7528\u7b80\u4fbf\u65b9\u6cd5\u8ba1\u7b97\uff1a
(1)3786\uff0d499
(2)32\u00d725\u00d7125
(3)1653\uff0d338\uff0d662
(4)7987+350+2013+450
(5)38\u00d738+62\u00d738
(6)452+99\u00d7452
(7)201\u00d779
(8)50\u00d7125\u00d74\u00d78
5.\u8ba1\u7b97\u4e0b\u9762\u5404\u9898\uff1a
(1)340\u00d7(120\uff0d40\u00f78)
(2)45\u00d7(720\uff0d1957\u00f719)
(3)86+[4500+(2088\u00f736)\u00f72]
(4)396\u00d7[74\uff0d(4875\u00f715\uff0d13\u00d721)]
(5)[1054\uff0d(174\uff0d168)]\u00f78
(6)6048\u00f7[(107\uff0d99)\u00d79]
\u8131\u5f0f\u8ba1\u7b97\u3002
408\uff0d12\u00d724 \uff0846\uff0b28\uff09\u00d760 42\u00d750\uff0d1715\u00f75
32\uff0b105\u00f75 \uff08108\uff0b47\uff09\u00d752 420\u00d7\uff08327\uff0d238\uff09
(4121+2389)\u00f77 671\u00d715-974 469\u00d712+1492
405\u00d7(3213-3189) 5000-56\u00d723 125\u00d7(97-81)
6942+480\u00f73 304\u00d732-154 20+80\u00f74-20\uff1d
然后 需要掌握些技巧 例57*65=（60-3）*65
在一位数乘以两位数时应将两位数分为两个部分 例43=40+3 然后将其拆分的两个部分分别乘以那个一位数
除法需要记几个定理 一个两位数 例AB A+B的值如果可以被3或9整除 则这个数AB就可以被3或9整除
其实据我的经验 主要还是靠多练习 我小学时为了练速算每天都会抽些时间做题 每5分钟一组 每次争取比上次要答对的题多
至于那些技巧也都是从训练中自己感受到的
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