苏教版四年级数学下册乘法运算定律练习题精选119Word格式.docx
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)×
16×
(17×
5)=17×
(21+97)×
4=21×
+97×
77×
7+39×
7=(77+ )×
19×
19+19×
61= 〇( 〇 )
47×
(28+62)= 〇 〇 〇二、怎样简便怎样计算。
29×
4 15×
104
22×
27+78×
27 47×
(20+2) 901×
165+235×
45 (30+6)×
25 98×
25
66×
53
94×
71
75×
43
57×
27=27×
(14×
13)=(5×
20×
(20+86)×
8=20×
+86×
93×
15+48×
15=(93+ )×
6×
32+6×
28= 〇( 〇 )
84×
(20+70)= 〇 〇 〇二、怎样简便怎样计算。
8 5×
31×
2 15×
101
80×
61+20×
61 99×
(10+1) 204×
16
98×
197+203×
98 (52+8)×
25 13×
14×
71×
76
27×
92
85=85×
(18×
11)=(5×
(31+45)×
7=31×
+45×
61×
17+25×
17=(61+ )×
33+6×
67= 〇( 〇 )
69×
(15+55)= 〇 〇 〇二、怎样简便怎样计算。
6 25×
2 11×
902
105+31×
105 58×
(10+2) 701×
54×
186+214×
54 (2+6)×
25 36×
5
26
97
67×
66
50×
26=26×
(36+61)×
3=36×
+61×
87×
8+80×
8=(87+ )×
20+14×
60= 〇( 〇 )
89×
(10+90)= 〇 〇 〇二、怎样简便怎样计算。
15×
2 25×
2 10×
48×
38+52×
38 48×
(50+2) 603×
87+413×
12 (4+6)×
25 77×
96×
11
79×
59
76=76×
(12×
3)=(5×
(9×
5)=9×
(18+36)×
4=18×
+36×
11+22×
11=(61+ )×
11×
43+11×
27= 〇( 〇 )
88×
(24+66)= 〇 〇 〇二、怎样简便怎样计算。
4 5×
37×
8 10×
403
42×
10+58×
10 88×
(20+5) 102×
18
38×
19+481×
38 (40+4)×
25 88×
81
61
13
30×
39=39×
(20×
(56+56)×
8=56×
+56×
85×
19+99×
19=(85+ )×
46+9×
14= 〇( 〇 )
(45+45)= 〇 〇 〇二、怎样简便怎样计算。
3×
17×
8 20×
504
56×
45+44×
45 68×
(30+1) 303×
29
21×
197+303×
21 (18+6)×
25 95×
2×
72
64×
54
54=54×
17)=(5×
4×
(19×
5)=19×
(19+50)×
4=19×
+50×
95×
12+13×
12=(95+ )×
15+6×
45= 〇( 〇 )
36×
(35+55)= 〇 〇 〇二、怎样简便怎样计算。
2 125×
903
38+65×
38 70×
(50+1) 103×
149+151×
13 (34+8)×
5 54×
55
70×
85
43×
28
24×
34=34×
(6×
(44+26)×
7=44×
+26×
68×
8+25×
8=(68+ )×
37+17×
63= 〇( 〇 )
(41+49)= 〇 〇 〇二、怎样简便怎样计算。
4 25×
23×
8 19×
96+86×
96 78×
(40+3) 204×
175+325×
15 (54+2)×
25 19×
40
22
52=52×
(7×
5)=7×
(74+10)×
6=74×
+10×
55×
19+77×
19=(55+ )×
8×
42+8×
58= 〇( 〇 )
(47+23)= 〇 〇 〇二、怎样简便怎样计算。
4 17×
303
35+68×
35 44×
(20+3) 402×
12
168+232×
14 (38+4)×
5 46×
89
77
50=50×
15)=(5×
(93+75)×
5=93×
+75×
60×
19+25×
19=(60+ )×
38+9×
62= 〇( 〇 )
(36+44)= 〇 〇 〇二、怎样简便怎样计算。
6 5×
2 19×
502
73×
113+27×
113 33×
(30+2) 203×
10
86+414×
66 (4+2)×
5 12×
90×
99
46×
67
65=65×
(73+22)×
4=73×
+22×
18+97×
18=(10+ )×
11+8×
69= 〇( 〇 )
(43+17)= 〇 〇 〇二、怎样简便怎样计算。
6 29×
601
94+12×
94 75×
(40+2) 904×
45+355×
18 (40+6)×
25 85×
92×
15
68=68×
19)=(5×
(43+12)×
4=43×
+12×
7+87×
7=(13+ )×
41+16×
59= 〇( 〇 )
26×
(26+74)= 〇 〇 〇二、怎样简便怎样计算。
2 21×
204
85+70×
85 37×
(60+3) 801×
58×
122+178×
58 (4+4)×
25 81×
38
68
(8×
7)=(5×
(5×
5)=5×
(12+18)×
3=12×
+18×
10+42×
10=(26+ )×
30+16×
70= 〇( 〇 )
(10+80)= 〇 〇 〇二、怎样简便怎样计算。
4 21×
203
103+84×
103 12×
(60+3) 204×
14
119×
31+369×
119 (50+6)×
5 50×
53×
28=28×
(23+40)×
7=23×
+40×
10+84×
10=(23+ )×
20+12×
40= 〇( 〇 )
(27+63)= 〇 〇 〇二、怎样简便怎样计算。
4 13×
60+77×
60 78×
(30+4) 401×
19
28×
121+279×
28 (46+6)×
5 91×
32
86
62=62×
9)=(5×
(37+24)×
4=37×
+24×
10+32×
10=(20+ )×
44+11×
16= 〇( 〇 )
(26+64)= 〇 〇 〇二、怎样简便怎样计算。
2 18×
301
72×
69+28×
69 62×
(10+4) 901×
117×
19+381×
117 (36+6)×
25 56×
41×
56
65×
60
(55+95)×
7=55×
+95×
12+86×
12=(79+ )×
33+3×
(25+35)= 〇 〇 〇二、怎样简便怎样计算。
8 25×
6 19×
49×
70+51×
70 34×
(40+3) 904×
96+204×
73 (56+8)×
25 27×
42
91×
36=36×
(32+44)×
4=32×
+44×
9+71×
9=(92+ )×
41+13×
19= 〇( 〇 )
81×
(18+72)= 〇 〇 〇二、怎样简便怎样计算。
4 12×
901
40+87×
40 94×
(20+4) 102×
139+361×
45 (42+4)×
46
11=11×
(4×
(89+58)×
2=89×
+58×
20+39×
20=(93+ )×
17+20×
73= 〇( 〇 )
2 30×
102
14+20×
14 46×
(30+2) 202×
27+373×
58 (54+6)×
25 91×
97×
76×
51
77=77×
(21×
5)=21×
(87+15)×
9=87×
+15×
7+63×
7=(38+ )×
29+17×
71= 〇( 〇 )
(24+46)= 〇 〇 〇二、怎样简便怎样计算。
8 18×
202
52×
47+48×
47 43×
(60+1) 903×
18 (50+8)×
5 72×
95