第3课时 练习课
1.
1.
答案:
第3课时 练习课
@@1.5 2 5 4 3 4
@@1.5 2 5 4 3 4
2.

答案:
2.4 1 1 4
3. 看谁算得又对又快。
1 + 2 =
5 - 3 =
2 - 1 =
3 + 1 =
4 - 3 =
2 + 3 =
3 - 2 =
5 - 2 =
1 + 1 =
4 - 2 =
1 + 4 =
5 - 1 =
1 + 2 =
5 - 3 =
2 - 1 =
3 + 1 =
4 - 3 =
2 + 3 =
3 - 2 =
5 - 2 =
1 + 1 =
4 - 2 =
1 + 4 =
5 - 1 =
答案:
3.3 2 1 4
1 5 1 3
2 2 5 4
1 5 1 3
2 2 5 4
4. 用自己的方式表示出下面算式的意思。

答案:
5;2
5. 看图写算式。

答案:
5.
(1)3 1 4
(2)4 2 2
(1)3 1 4
(2)4 2 2
每日口算
4 + 1 =
4 - 3 =
2 + 1 =
3 - 1 =
2 + 2 =
5 - 2 =
4 - 2 =
4 - 1 =
5 - 3 =
2 - 1 =
1 + 2 =
3 - 2 =
3 + 1 =
5 - 1 =
1 + 4 =
1 + 3 =
3 + 2 =
5 - 4 =
2 + 3 =
1 + 1 =
用时:_分_秒
正确:_道
4 + 1 =
4 - 3 =
2 + 1 =
3 - 1 =
2 + 2 =
5 - 2 =
4 - 2 =
4 - 1 =
5 - 3 =
2 - 1 =
1 + 2 =
3 - 2 =
3 + 1 =
5 - 1 =
1 + 4 =
1 + 3 =
3 + 2 =
5 - 4 =
2 + 3 =
1 + 1 =
用时:_分_秒
正确:_道
答案:
每日口算
5 1 3 2 4 3 2 3 2 1 3
1 4 4 5 4 5 1 5 2
5 1 3 2 4 3 2 3 2 1 3
1 4 4 5 4 5 1 5 2
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