能简算的要用简便方法计算(1)3-616-716(2)712+112+512(3)1516-(15+116)(4)17+14+67+24(5)2113-(813+110)(6)23-19-29.-数学
1 |
12 |
=1+
1 |
12 |
=1
1 |
12 |
(3)
15 |
16 |
1 |
5 |
1 |
16 |
=
15 |
16 |
1 |
16 |
1 |
5 |
=
7 |
8 |
1 |
5 |
=
27 |
40 |
(4)
1 |
7 |
1 |
4 |
6 |
7 |
2 |
4 |
=(
1 |
7 |
6 |
7 |
1 |
4 |
2 |
4 |
=1+
3 |
4 |
=1
3 |
4 |
(5)
21 |
13 |
8 |
13 |
1 |
10 |
=
21 |
13 |
8 |
13 |
1 |
10 |
=1-
1 |
10 |
=
9 |
10 |
(6)
[家长教育] 孩子为什么会和父母感情疏离? (2019-07-14) |
[教师分享] 给远方姐姐的一封信 (2018-11-07) |
[教师分享] 伸缩门 (2018-11-07) |
[教师分享] 回家乡 (2018-11-07) |
[教师分享] 是风味也是人间 (2018-11-07) |
[教师分享] 一句格言的启示 (2018-11-07) |
[教师分享] 无规矩不成方圆 (2018-11-07) |
[教师分享] 第十届全国教育名家论坛有感(二) (2018-11-07) |
[教师分享] 贪玩的小狗 (2018-11-07) |
[教师分享] 未命名文章 (2018-11-07) |