苏教版四年级数学下册运算定律专项练习题75Word文档格式.docx
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21(40+8)×
2521×
14×
5
25+75+25599+402
45+52+55+48502+533
57+58+59+60+6178+145+322
5+7+9+11+13+15+17+19+21+23
19×
45×
425×
9×
221×
704
56×
71+44×
7196×
(10+1)204×
25
三、下面各题,怎样算简便就怎样算。
604-159-41200-21-79
53+20=20+____
89×
77=____〇×
89
99+35+35=99〇(____〇____)
48×
25×
6=48×
(10×
13)=(5×
2×
(5×
5)=5×
(61+95)×
3=61×
____+95×
60×
20+69×
20=(60+____)×
19+8×
81=____〇(____〇____)
58×
(47+53)=____〇____〇____〇____
852+40232×
25202×
33
77×
124+276×
77(48+6)×
561×
125
15+29+71765+201
18+51+52+49603+606
71+72+73+74+7564+15+336
2+3+4+5+6+7+8+9+10+11
15×
625×
620×
102
74×
43+26×
4390×
(40+4)404×
30
876-83-417236-14-86
48+73=73+____
28×
29=____〇×
28
90+22+78=90〇(____〇____)
51×
6=51×
(6×
17)=(5×
(3×
5)=3×
(74+22)×
9=74×
____+22×
65×
8+87×
8=(65+____)×
32+2×
58=____〇(____〇____)
41×
(45+45)=____〇____〇____〇____
522+40136×
35
31×
161+239×
31(10+2)×
538×
12×
99+15+85139+402
43+32+17+168202+966
79+80+81+82+83186+124+14
4+6+8+10+12+14+16+18+20+22
11×
6125×
33×
415×
203
108+59×
10881×
(50+1)401×
15
925-59-141137-73-27
45+36=36+____
54×
33=____〇×
54
97+27+73=97〇(____〇____)
64×
6=64×
10×
(21×
5)=21×
(75+53)×
2=75×
____+53×
14+12×
14=(21+____)×
37+15×
33=____〇(____〇____)
44×
(22+68)=____〇____〇____〇____
400+80312×
14
69×
113+187×
69(30+8)×
551×
67+78+22263+103
45+18+15+82705+460
60+61+62+63+6448+20+252
6+8+10+12+14+16+18+20+22+24
3×
65×
39×
218×
38×
113+62×
11324×
(20+5)802×
11
747-61-239146-88-12
52+51=51+____
20×
78=____〇×
20
73+19+51=73〇(____〇____)
6=58×
(8×
15)=(5×
(60+65)×
2=60×
____+65×
95×
5+52×
5=(95+____)×
39+2×
21=____〇(____〇____)
(47+13)=____〇____〇____〇____
812+90312×
25101×
28
47×
43+357×
47(32+4)×
2561×
6×
86+29+71756+601
21+77+69+123802+972
23+24+25+26+2722+39+878
8125×
816×
501
66+89×
6611×
(40+3)304×
895-32-268276-38-62
61+98=98+____
59×
70=____〇×
59
59+28+52=59〇(____〇____)
87×
6=87×
(2×
11)=(5×
(56+94)×
3=56×
____+94×
50×
8+77×
8=(50+____)×
42+11×
18=____〇(____〇____)
(48+52)=____〇____〇____〇____
961+90216×
27
105×
154+246×
105(56+4)×
568×
67+65+35267+502
31+18+69+82505+724
40+41+42+43+44185+76+615
4+5+6+7+8+9+10+11+12+13
2125×
7×
829×
703
26×
74+74×
7428×
(60+5)303×
23
517-25-175273-36-64
90+64=64+____
95=____〇×
90
65+24+36=65〇(____〇____)
62×
6=62×
(65+78)×
3=65×
____+78×
20+63×
20=(56+____)×
36+10×
54=____〇(____〇____)
(43+57)=____〇____〇____〇____
427+10248×
40
117×
128+272×
117(14+8)×
2548×
84+75+25500+502
22+89+38+111501+621
28+29+30+31+3278+133+422
5+6+7+8+9+10+11+12+13+14
626×
803
78×
101+22×
10153×
(50+2)201×
21
660-168-32175-46-54
17+43=43+____
70×
93=____〇×
70
42+16+54=42〇(____〇____)
6=14×
(14×
5)=(5×
18×
(70+59)×
3=70×
____+59×
99×
17+34×
17=(99+____)×
10+7×
90=____〇(____〇____)
(18+82)=____〇____〇____〇____
806+30336×
30×
18+282×
30(4+2)×
2582×
38+35+65780+203
35+46+25+154604+694
32+33+34+35+36172+77+128
10+12+14+16+18+20+22+24+26+28
228×
304
93+26×
9313×
(60+2)601×
29
992-177-23209-66-34
84+20=20+____
80×
23=____〇×
80
62+32+28=62〇(____〇____)
6=50×
(20×
(7×
5)=7×
(16+32)×
9=16×
____+32×
8+69×
8=(47+____)×
40+2×
20=____〇(____〇____)
36×
(33+37)=____〇____〇____〇____
349+80192×
36
17×
58+442×
17(16+8)×
598×
4×
17+13+87599+301
50+55+20+145504+698
21+22+23+24+25124+147+476
1+2+3+4+5+6+7+8+9+10
25×
414×
202
22×
55+78×
5534×
(30+4)303×
600-69-231117-45-55
70+15=15+____
67×
67
71+38+32=71〇(____〇____)
6=39×
(18×
7)=(5×
(9×
5)=9×
(28+27)×
8=28×
____+27×
66×
14+46×
14=(66+____)×
17+20×
73=____〇(____〇____)
(45+25)=____〇____〇____〇____
179+90220×
28+272×
117(12+4)×
573×
74+14+86581+402
50+44+10+56205+428
68+69+70+71+7233+133+567
825×
602
38+30×
3882×
(40+5)202×
802-145-155180-43-57