【七大类型简便计算狂刷题】四下数学+答案

3.0 几几米 2025-03-18 6 4 6.54MB 15 页 1积分
侵权投诉
1 / 15
1a+b=b+a
2(a+b)+c=a+(b+c)
3a b=b a
4(a b) c=a (b c)
5(a+b) c=a c+b c a (b+c)=a b+a c
6 ( ) a-b-c=a-(b+c) a-(b+c)=a-b-c
7 ( ) c)
1.
607 (57-23) (123+213) (57-54)]
=20638 =16
=34
25 (79 4) 78+36 22
(800 4) 25
=7900 =32 =3600
2. ( )
167+289+33+11 (36 54-984)
=(167+33)+(289+11) =(1944-
=500 =40
49 25+25 51 (67-52)]
=2500 =25
2 / 15
3.
=100000
735-35-65
=735-(35+65)
=735-100
=635
=7200
-1)
-
=14355
4.
=45000
=3
=3300
5.
=100000
72-
=72-16
=56
729+269-169+271
=(729+271)+(269-169)
=1000+100
=1100
=13500
-52)]
=11
=125
6.
=940
903-
=903-880
=23
3 / 15
=3612
521+78-293
=599-293
=306
7.
25 78 4
=7800
-80
=10
=1000+100
=1100
286+42+114
=(158+42)+(286+114)
=200+400
=600
=600
-
=(1260-
=25
8.
17
=17 100
=1700
125
=9000
=19000
125
=50000
9.
125 4)
=10000+500
=10500
(100-
-
=2500-200
=2300
4 / 15
10.
45
=(54+45)+99x99
=99+99x99
=9900
=33
=333000
1999+999x999
=1000+999+999x999
=1000x(999+1)
=1000000
11.
=68 100+68
=6800+68
=6868
=256000+512
=256512
=14800+74
=14874
0+154
=92400+154
=92554
12.
=10 5
=15
=20
(2046-1059-
- -
=682-353-245
=84
=35
13.
=1100
=960
5 / 15
=10
=96
14.
=9900
354+218+82
=354+(218+82)
=354+300
=654
=76000
76+158+124+142
=(276+124)+(158+142)
=400+300
=700
=7900
879-432-68
=879-(432+68)
=879-500
=379
15.
=7850
=7488+256
=7744
=1300
16.
37+5+45
=37+(5+45)
=37+50
=87
=65+(24+6)
=65+30
=95
78+16+4
=78+(16+4)
=78+20
=98
38+46+2
=38+2+46
=40+46
=86
6 / 15
17.
39+27
=39+1+26
=40+26
=66
=49+1+47
=50+47
=97
37+46
=37+3+43
=40+43
=83
59+37
=59+1+36
=60+36
=96
18.
25+18-15
=25-15+18
=10+18
=28
21-25+29
=21+29-25
=50-25
=25
36+25-16
=36-16+25
=20+25
=45
32-28+38
=32+38-28
=70-28
=42
19.
158+262+142+138
=(158+142)+(262+138)
=300+400
=700
-178
-1)
100
=17800
=100000
=73
20.
-178
-1)
=17800
9.27-1.43-4.57
=9.27-(1.43+4.57)
=9.27-6
=3.27
-254) 27]
=2808
21.
-
=(128-
=3400
-1)
-
=6800-68
=6732
=7

标签： #数学计算；校内数学

【七大类型简便计算狂刷题】四下数学+答案.pdf

共15页,预览15页

还剩页未读， 继续阅读

相关推荐

更多
立即下载
作者：几几米 分类：中小学教育资料 价格：1积分 属性：15 页 大小：6.54MB 格式：PDF 时间：2025-03-18

开通VIP享超值会员特权

  • 多端同步记录
  • 高速下载文档
  • 免费文档工具
  • 分享文档赚钱
  • 每日登录抽奖
  • 优质衍生服务

作者详情

Ta的主页

相关内容

更多

推荐作者

热门标签

/ 15
评分 收藏
分享
立即下载
客服
关注