详解200题四年级上下册数学简便计算题文档格式.docx
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详解200题四年级上下册数学简便计算题文档格式.docx
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(5×
2)
=230
25×
9×
4
=25×
9
8×
(125×
13)
=8×
125×
13
=13000
(250×
125)×
8)
=125×
4)
=1000000
88×
125
11
=11000
42×
=42×
=210000
72×
=9000
64×
25
(25×
=200000
=100×
(8×
=1100000
第四类:
(12+5)×
40
=12×
40+5×
=680
(40-4)
40-125×
=5400
76×
103
=76×
(100+3)
=7828
=2×
21
=1050
18×
=(10+8)×
=10×
125+8×
125=2250
44
=110
99×
78
=(100-1)×
78-1×
78=7722
=900-9=891
第五类:
37+37×
55
=37×
+(45+55)
=3700
28×
21+28×
79
=28×
(21+79)
=2800
17×
23-23×
7
(17-7)
38×
46+64×
38
=38×
(46+64)
110
(100+10)
=4180
32+32
=32×
(99+1)
=3200
46+46×
59
=46×
(59+1)
=2760
167×
2+167×
3+167×
=167×
(2+3+5)
=1670
39×
8+6×
39-39×
=39×
(8+6-4)
=390
225-2×
225-6×
225
=225×
(28-2-6)
=4500
(42+25)×
125+(18+15)×
(42+18+25+15)
=12500
2×
4+25×
2+27×
1×
8+25×
1
23+25×
8+27×
8
(23+25+27+25)
=800
22+33×
34
=33×
3×
(66+34)
=3300
第六类:
除法简便计算题
250÷
5÷
=250÷
=25
360÷
4÷
=360÷
9)
=10
600÷
12÷
=600÷
(12×
800÷
=800÷
8÷
=20
480÷
48
=480÷
48÷
=2
240÷
12
=240÷
=4
420÷
35
=420÷
7÷
=12
2400÷
=2400÷
=96
7800÷
=7800÷
6÷
=650
第七类:
加减综合简便计算题
92+99
=92+(100-1)
=92+100-1
=191
197+102
=197+(100+2)
=197+100+2
=299
354-108
=354-(100+8)
=354-100-8
=246
323+189-123
=323-123+189
=389
405-99
=405-(100-1)
=405-100+1
=306
127-98
=127-(100-2)
=127-100+2
=29
672-36+64
=672-(36+64)
=572
248+86-48
=248-48+86
=286
(6467-832)+(1832-1467)
=6467-1467+(1832-832)
=6000
1530+(592-530)-192
=1530-530+(592-192)
=1400
(2+4+6+…+98+100)-(1+3+5+…+97+99)
=(2-1)+(4-3)+…+(98-97)+(100-99)
=1+1+..+1+1
=50
第八类:
乘除综合简便计算题
960×
46÷
=960÷
48×
46
=920
3702×
38÷
1234
=1234×
=114
99000÷
121×
=99000÷
(121÷
11)
640÷
(16÷
=640÷
16×
=160
1000÷
(125÷
=1000÷
=32
第九类:
加减乘除
(98+147)÷
49
=98÷
49+147÷
=5
(230-23)÷
23
=230÷
23-23÷
=9
(250-25)÷
25-25÷
1736÷
28+1064÷
28
=(1736+1064)÷
(860+240÷
12)
880
=110000
700+612÷
12×
=700+612÷
3÷
=700+204
=904
(37+15)×
85+1360
=(50+2)×
=50×
85+2×
=4250+170+1360
=5610+170=5780
2005×
20062006-2006×
20052005
=2005×
2006×
10001-2006×
10001
=0
(42×
11×
125)
(12+50)×
40+50×
=86×
86×
100+86×
3
=8858
10+125×
=2250
=1100
9-9
=91
=78×
100-78
=7722
38+38×
=(45+55)×
=3800
=(21+79)×
=7900
37×
=(37-7)×
=690
=(46+64)×
=(99+1)×
32
=(59+1)×
=(2+3+5)×
167
=(8+6-4)×
39
=(28-2-6)×
=2500
=[(42+18)+(25+15)]×
=258-68
=190
=253
=250×
13)×
=11×
=9×
25)
=100000
=2480
100+3×
76
(40+4)
40+25×
=(40+2)×
=40×
25+2×
100-9
=891
=7800-78
37
=(17-7)×
=110×
10+38×
100
=(10+100)×
360-4-9
=360-(4×
0.18+4.26一0.18十4.26
=4.26+4.26+(0.18-0.18)
=8.52
8100÷
75
=(81×
100)÷
3)
=81÷
(100÷
16800÷
120
=(12000+4800)÷
=140
1248÷
24
=1248÷
=52
3150÷
15
=3150÷
=210
(10000-1000-100-10)÷
10
=10000÷
10-1000÷
10-100÷
10-10÷
=1000-(100+10+1)
=889
138+293+62+107
=138+62+(293+107)
=500
99+999+9999+99999
=(99+1)+(999+1)+(9999+1)+(99999+1)-4
=111096
66.86-8.66-1.34
=66.88-(8.66+1.34)
=56.88
8811÷
89
=(8900-89)÷
=99
10-0.432-2.568
=10-(0.432+2.568)
=7
98×
199
=98×
(200-1)
=19502
6.8×
0.04
0.04×
6.8
=6.8
355+260+140+245
=355+245+(260+140)
=1000
102×
99
=99×
(100+2)
=10098
=250
645-180-245
=645-245-180
=4000
(40+6)
=1150
382×
101-382
=382×
(101-1)
=38200
101×
56
=(100+1)×
=5656
26
=2574
1022-478-422
=1022-(478+422)
=122
60×
50×
=4×
(60×
=96000
930÷
0.6÷
=930÷
(0.6×
=310
63.4÷
2.5÷
0.4
=63.4÷
(2.5×
0.4)
=63.4
2357-183-317-357
=2357-357-(183+317)
=1500
=672-36-36+36+64
=(672-72)+(36+64)
36-64-36+64
=(36-36)+(64+64)
=128
500-257-34-143
=500-(257+34)-143
=57
755-287+87
=755-(287-87)
=555
1814-378一422
=1814-(378+422)
=1014
89×
99+89
=8900
3999+498
=(4000-1)+(500-2)
=4000+500-1-2
=4497
568-(68+178)
=568-68-178
=322
225+225×
=(88+12)×
=22500
698-291一9
=698-(291+9)
=398
382+165+35-82
=382-82+(165+35)
155+256+45-98
=(155+45)+256-(100-2)
=200+256-100+2
=358
759-126-259
=759-259-126
=374
75×
99+2×
=75×
(99+2)
100+75×
=7575
216+89+11
=216+(89+11)
=316
=600-(12×
117+392+608
=117+(392+608)
=1117
27+27×
27
=2700
87×
53+87×
47
=(53+47)×
87
=8700
7×
75-7×
=(75-25)×
=350
234—6634
=234-34-66
=134
528—53-47
=528-(53+47)
=428
435-(135+189)
=435-135-189
=111
25+32×
25+25
=(167+32+1)×
=5000
99+38
147+147×
147
=14700
(4+8)
4+8×
=300
108×
=(100+8)×
=8100
35×
201
=35×
(200+1)
=7035
98
(100-2)
=7350
6
6×
=12000
32×
88
=600
3500-4-25
=3500-(4×
=35
35÷
(35×
=60
30+255+70
=30+70+255
=355
282+41+159
=282+(41+159)
=482
6.3÷
1.8
=6.3÷
0.9÷
=3.5
64+125×
36
=(64+36)×
199+64
=64×
(199+1)
=12800
528-53-47
158+395+105
=158+(395+105)
=658
(13×
6)÷
6)
=13×
(8÷
4)×
(5÷
5)×
(6÷
=26
2.1×
99+2.1
=2.1×
4800÷
=48×
100÷
=192
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