
小数:乘除混合运算【18/02/2021】
Presentation
•
Mathematics
•
6th Grade
•
Hard
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6 Slides • 10 Questions
1
小数:乘除混合运算
2
【复习】小数的乘法
根据问题的小数位总数量
在答案点上小数点
不像加减那样,对齐小数点
3
【复习】小数的除法
答案和框框里数目的小数点对齐
4
我们都知道【先乘除,后加减】
然而,在问题里都有【乘】和【除】时,
我们应该从左到右处理,而不是先做乘再做除。
5
6÷3×2
还记得这个问题吗?
如果先处理【 3 乘 2 】,最后的答案是 1
6
【练习】
7
Multiple Choice
( 3460−840 ) ÷ ( 5+15 )=
131
3307
2620
3418
8
Multiple Choice
4000−3200÷20=
40
3840
400
384
9
Multiple Choice
560+7.53×10
567。53
5675.3
6353
635.3
10
Multiple Choice
2.96×1.5÷0.4=
10.725
10.735
11.1
1.11
11
Multiple Choice
3.45÷0.6×1.54=
8.855
11.42
11.165
9.06
12
Multiple Choice
0.871×0.9÷0.3=
2.313
23.13
2.613
26.13
13
Multiple Choice
5.97×6÷3=
11.94
10.94
17.91
16.91
14
Multiple Choice
8.46÷9×100=
0.94
9.4
94
940
15
Multiple Choice
8.328×3÷4 =
24.984
24.894
6.426
6.246
16
Multiple Choice
3.92 ÷ 4 × 5
4.9
49
9.8
98
小数:乘除混合运算
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