四年级简便运算(乘法分配律)450道
-
简便运算（乘法分配律）
450
道
28 ×
29 + 42
×
29 =
71 ×
68 +
71 ×
22 =
55 ×
43
+ 55 ×
17 =
61 ×
23 + 61 ×
37 =
46
×
49 + 46 ×
1 =
46 ×
39 + 44 ×
39
=
27 ×
34 + 23 ×
34 =
34 ×
84 + 6
×
84 =
4 ×
86 +
16 ×
86 =
76 ×
39
+ 76 ×
11 =
54 ×
70 + 6 ×
70 =
25
×
28 + 55 ×
28 =
64 ×
24 + 64 ×
6
=
9 ×
68 + 61 ×
68 =
75 ×
44 + 5
×
44 =
62
×
48 + 62 ×
2 =
34 ×
38 + 46 ×
38
=
72 ×
11 + 72 ×
49 =
76 ×
3 + 76
×
77 =
30 ×
35 +
30 ×
35 =
52 ×
96
+ 8 ×
96 =
30 ×
65 + 30 ×
5 =
27
×
75 + 27 ×
15 =
62 ×
6 + 62 ×
24
=
36 ×
52 + 4 ×
52 =
55 ×
99 + 15
×
99 =
19 ×
32 +
19 ×
48 =
3 ×
53
+ 57 ×
53 =
74 ×
47 + 74 ×
33 =
54
×
9 + 54 ×
21 =
28 ×
2 + 32 ×
2 =
37 ×
35 + 23
×
35 =
7 ×
70 + 7
×
20 =
27 ×
24 +
27 ×
46 =
45 ×
68
+ 5 ×
68 =
4 ×
84
+ 66 ×
84 =
34 ×
19 + 36 ×
19 =
83
×
36 + 83 ×
4 =
5
×
30 + 5 ×
20 =
26 ×
5 + 64 ×
5 =
3 ×
87 + 67 ×
87
=
61 ×
29 + 29 ×
29 =
53 ×
26 + 27
×
26 =
67 ×
15 +
67 ×
55 =
84 ×
78
+ 84 ×
2 =
48 ×
27 + 48 ×
3 =
5 ×
5 + 5 ×
25 =
48
×
63 + 48 ×
17 =
48 ×
88 + 22 ×
88
=
81 ×
35 + 81 ×
15 =
25 ×
68 + 45
×
68 =
36 ×
8 +
54 ×
8 =
7 ×
52 +
7 ×
38 =
24 ×
36
+ 24 ×
24 =
98 ×
25 + 98 ×
35 =
27
×
77 + 43 ×
77 =
56 ×
40 + 56 ×
10
=
14 ×
30 + 56 ×
30 =
11 ×
90 + 29
×
90 =
54 ×
26 +
54 ×
44 =
94 ×
3
+ 94 ×
77 =
24 ×
2 + 26 ×
2 =
65 ×
10 + 65 ×
70 =
60
×
24 + 20 ×
24 =
12 ×
91 + 78 ×
91
=
20 ×
44 + 60 ×
44 =
22 ×
86 + 58
×
86 =
66 ×
92 +
14 ×
92 =
7 ×
82
+ 43 ×
82 =
26 ×
2 + 26 ×
68 =
78
×
5 + 78 ×
25 =
9
×
40 + 9 ×
50 =
53 ×
46 + 37 ×
46
=
93 ×
29 + 93 ×
61 =
32 ×
12 + 32
×
68 =
96 ×
2 +
96 ×
58 =
92 ×
11
+ 92 ×
19 =
8 ×
32 + 62 ×
32 =
40
×
22 + 40 ×
28 =
22 ×
62 + 68 ×
62
=
83 ×
35 + 83 ×
5 =
63 ×
17 + 63
×
13 =
26 ×
90 +
34 ×
90 =
3 ×
30
+ 3 ×
20 =
75 ×
64 + 75 ×
26 =
37
×
31 + 37 ×
59 =
21 ×
21 + 21 ×
69
=
31 ×
12 + 31 ×
78 =
2 ×
32 + 58
×
32 =
23 ×
10 +
23 ×
50 =
27 ×
63
+ 13 ×
63 =
70 ×
59 + 20 ×
59 =
77
×
51 + 77 ×
9 =
41 ×
58 + 39 ×
58
=
21 ×
2 + 39 ×
2
=
26 ×
62 + 64 ×
62 =
14 ×
2 + 14
×
88 =
63 ×
5 +
63 ×
35 =
87 ×
6
+ 87 ×
24 =
29 ×
86 + 1 ×
86 =
15
×
51 + 55 ×
51 =
33 ×
50 + 33 ×
10
=
6 ×
32 + 54 ×
32 =
27 ×
62 + 27
×
28 =
76 ×
44 +
4 ×
44 =
99 ×
36
+ 99 ×
24 =
11 ×
46 + 11 ×
4 =
5 ×
85 + 35 ×
85 =
51
×
97 + 29 ×
97 =
88 ×
43 + 88 ×
17
=
11 ×
62 + 49 ×
62 =
77 ×
22 + 13
×
22 =
1 ×
58 +
69 ×
58 =
3 ×
26
+ 77 ×
26 =
3 ×
29 + 3 ×
21 =
77
×
37 + 77 ×
3 =
37 ×
62 + 53 ×
62
=
64 ×
83 + 26 ×
83 =
13 ×
31 + 37
×
31 =
5 ×
74 + 5
×
74 =
4 ×
10 + 4
×
20 =
76 ×
45 +
4 ×
45 =
79 ×
59
+ 79 ×
11 =
11 ×
10 + 11 ×
10 =
17
×
36 + 23 ×
36 =
71 ×
14 + 71 ×
56
=
44 ×
47 + 46 ×
47 =
61 ×
57 + 61
×
33 =
12 ×
47 +
48 ×
47 =
50 ×
53
+ 50 ×
27 =
33 ×
63 + 47 ×
63 =
95
×
11 + 95 ×
79 =
1 ×
47 + 79 ×
47
=
32 ×
98 + 28 ×
98 =
45 ×
5 + 35
×
5 =
1 ×
97 + 89
×
97 =
83 ×
81 +
7 ×
81 =
25 ×
52
+ 15 ×
52 =
54 ×
35 + 54 ×
55 =
14
×
11 + 66 ×
11 =
76 ×
96 + 4 ×
96
=
59 ×
4 + 11 ×
4
=
86 ×
56 + 86 ×
34 =
79 ×
10 + 79
×
60 =
69
×
3 + 69 ×
27 =
51 ×
20 + 51 ×
20
=
1 ×
1 + 59 ×
1
=
21 ×
35 + 19 ×
35 =
10 ×
45 + 60
×
45 =
39 ×
57 +
1 ×
57 =
1 ×
53 +
1 ×
7 =
74 ×
36 +
74 ×
14 =
89 ×
28
+ 89 ×
12 =
50 ×
1 + 50 ×
49 =
56
×
41 + 56 ×
49 =
54 ×
12 + 54 ×
18
=
64 ×
10 + 64 ×
50 =
70 ×
17 + 70
×
3 =
23 ×
73 + 7
×
73 =
29 ×
5 +
11 ×
5 =
9 ×
69 +
81 ×
69 =
39 ×
99
+ 11 ×
99 =
13 ×
12 + 13 ×
68 =
6
×
3 + 6 ×
67 =
75
×
43 + 5 ×
43 =
55 ×
87 + 15 ×
87
=
30 ×
61 + 20 ×
61 =
61 ×
1 + 9 ×
1 =
12 ×
99 + 48
×
99 =
39 ×
55 +
51 ×
55 =
4 ×
73
+ 36 ×
73 =
16 ×
44 + 24 ×
44 =
20
×
2 + 60 ×
2 =
33
×
29 + 27 ×
29 =
26 ×
62 + 4 ×
62
=
28 ×
84 + 32 ×
84 =
6 ×
15 + 6 ×
15 =
22 ×
58 + 28
×
58 =
54 ×
64 +
54 ×
26 =
11 ×
28
+ 11 ×
22 =
76 ×
80 + 76 ×
10 =
77
×
1 + 77 ×
19 =
44 ×
51 + 26 ×
51
=
20 ×
8 + 10 ×
8
=
91 ×
55 + 91 ×
5 =
54 ×
55 + 54
×
35 =
54 ×
93 +
16 ×
93 =
74 ×
23
+ 16 ×
23 =
86 ×
68 + 86 ×
12 =
79
×
70 + 11 ×
70 =
11 ×
35 + 79 ×
35
=
29 ×
28 + 29 ×
2 =
40 ×
35 + 40
×
5 =
49 ×
32 +
49 ×
38 =
20 ×
49
+ 40 ×
49 =
39 ×
8 + 39 ×
82 =
82
×
33 + 82 ×
57 =
34 ×
15 + 26 ×
15
=
56 ×
18 + 56 ×
2 =
60 ×
63 + 60
×
27 =
23 ×
37 +
37 ×
37 =
52 ×
21
+ 52 ×
39 =
58 ×
92 + 2 ×
92 =
1 ×
90 + 59 ×
90 =
11
×
20 + 59 ×
20 =
19 ×
92 + 51 ×
92
=
16 ×
5 + 24 ×
5
=
95 ×
56 + 95 ×
4 =
38 ×
5 + 32 ×
5 =
32 ×
37 + 32
×
23 =
43 ×
48 +
43 ×
12 =
23 ×
4
+ 23 ×
86 =
42 ×
26 + 42 ×
24 =
30
×
60 + 30 ×
60 =
27 ×
80 + 43 ×
80
=
10 ×
95 + 80 ×
95 =
66 ×
57 + 4
×
57 =
22 ×
66 +
58 ×
66 =
98 ×
29
+ 98 ×
61 =
3 ×
71 + 77 ×
71 =
53
×
12 + 37 ×
12 =
3 ×
78 + 57 ×
78
=
3 ×
12 + 57 ×
12 =
13 ×
22 + 17
×
22 =
5 ×
31 + 5
×
31 =
74 ×
72 +
6 ×
72 =
24 ×
10
+ 24 ×
70 =
28 ×
8 + 42 ×
8 =
47 ×
5 + 47 ×
75 =
67
×
34 + 67 ×
6 =
47 ×
98 + 43 ×
98
=
36 ×
36 + 36 ×
54 =
30 ×
78 + 60
×
78 =
25 ×
70 +
25 ×
20 =
68 ×
6
+ 68 ×
4 =
27 ×
22 + 53 ×
22 =
36
×
35 + 36 ×
15 =
13 ×
43 + 57 ×
43
=
10 ×
39 + 30 ×
39 =
91 ×
7 + 91
×
43 =