我想問下小數點的問題!
1. 4.5+5.6=??
2. 65.4-56.5=??
都係甘上下!我唔係甘識做!邊個可以答下我啊t.t@@
做數學 homework!!快快快!有15點
2010-03-08 5:23 am
回答 (9)
2010-03-10 12:08 am
✔ 最佳答案
1)4.5+5.6
=(4+5)+(0.5+0.6)
=9+1.1
=10.1
2)
65.4-56.5
=(60-40)+(14-6)+(1.4-0.5)
=20+8+0.9
=28.9
2010-03-09 16:11:07 補充：
Sorry!我第二題錯咗!我再打一次.
65.4-56.5
=(64-56)+(1.4-0.5)
=8+0.9
=8.9
參考: ME^^
2010-03-12 5:42 am
1)4.5+5.6
=10.1
2)65.4-56.5
=8.9
=10.1
2)65.4-56.5
=8.9
2010-03-10 1:57 am
1)10.1
2)8.9
2)8.9
2010-03-08 9:31 pm
1) 4.5 + 5.6
= (4 + 5) + (0.5 + 0.6)
= 9+1.1
= 10.1
2) 65.4 - 56.5
= (64 - 56) + (1.4 - 0.5)
= 8 + 0.9
= 8.9
= (4 + 5) + (0.5 + 0.6)
= 9+1.1
= 10.1
2) 65.4 - 56.5
= (64 - 56) + (1.4 - 0.5)
= 8 + 0.9
= 8.9
參考: 個人數學知識
2010-03-08 7:21 pm
1. 4.5+5.6
=10.1
４.５
+5.6
10.1
(要對齊小數點位)
2. 65.4-56.5
=8.9
６５.４
- 56.5
8.9
(要退位)
所有小數點的問題,都要:
對齊小數點位!!!
=10.1
４.５
+5.6
10.1
(要對齊小數點位)
2. 65.4-56.5
=8.9
６５.４
- 56.5
8.9
(要退位)
所有小數點的問題,都要:
對齊小數點位!!!
參考: ME
2010-03-08 11:44 am
1.（4+6）+（0.6+0.5）
=10+1.1
+11.1
2.65.4-56.5
=（65-56）+（0.4-0.5）
=9-0.1
=8.9
2.65.4-56.5
=（64-56)+（1.4-0.5)
=8+0.9
=8.9
你把他們分開。十位和小數位分開就會好簡單的了！
2010-03-08 03:45:39 補充：
sorry！把題目看錯了！
1.（4+5）+（0.6+0.5）
=9+1.1
+10.1
=10+1.1
+11.1
2.65.4-56.5
=（65-56）+（0.4-0.5）
=9-0.1
=8.9
2.65.4-56.5
=（64-56)+（1.4-0.5)
=8+0.9
=8.9
你把他們分開。十位和小數位分開就會好簡單的了！
2010-03-08 03:45:39 補充：
sorry！把題目看錯了！
1.（4+5）+（0.6+0.5）
=9+1.1
+10.1
參考: 自己
2010-03-08 7:06 am
1. 4.5+5.6=10.1
2. 65.4-56.5=8.9
2. 65.4-56.5=8.9
2010-03-08 5:29 am
1. 4.5+5.6=10.1
4.5 + 5.6
= (4 + 5) + (0.5 + 0.6)
= 9 + 1.1
= 10.1
2. 65.4-56.5=8.9
65.4-56.5
= (65 - 56) + (0.4 - 0.5)
= 9 + (-0.1)
= 9 - 0.1
= 8.9
希望幫到你=)
4.5 + 5.6
= (4 + 5) + (0.5 + 0.6)
= 9 + 1.1
= 10.1
2. 65.4-56.5=8.9
65.4-56.5
= (65 - 56) + (0.4 - 0.5)
= 9 + (-0.1)
= 9 - 0.1
= 8.9
希望幫到你=)
參考: 自己
收錄日期: 2021-04-13 17:08:07
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100307000051KK01700