1樓:華
=18×(420+41)
=18×461
=8298
2樓:匿名使用者
18x(420十360÷90)=18x(420十4)=【20-2】x424=20x424-2x424=8480-848=7000+1480-848=7000+800+200+480-848=7000+200+480-48=7000+150+50+480-48=7000+150+2+480=7000+150+2+500-20=7000+650+2-20=7650+2-20=7630+2=7632
18x(420十360÷90)的簡便方法
3樓:匿名使用者
=(20-2)×424=8480-848=7632
4樓:匿名使用者
=18x(420十4)
=【20-2】x424
=20x424-2x424
=8480-848
=7000+1480-848
=7000+800+200+480-848=7000+200+480-48
=7000+150+50+480-48
=7000+150+2+480
=7000+150+2+500-20
=7000+650+2-20
=7650+2-20
=7630+2
=7632
18x(420 360÷90)簡算?
5樓:一股情流
這道題應該按照運算順序進行計算,先算會中除法,然後加減法,最後再算髖外的乘法就可以了
6樓:數學愛好者
18x(420 360÷bai90)
du簡算?
18×zhi(420+360÷90)=
18×dao(420+4)= 先計算
回除法18×400+18×24= 簡便關鍵步驟17200+18×20+18×4= 簡便關鍵步驟27200+360+72=7632
簡便計答算結果為7632
7樓:abc柯柯
就是直接計算即可,得到18乘以420-40,就是18*380,所以結果就是6840
8樓:匿名使用者
這種的話,你要算的話,其實用計算機就可以。
9樓:負壹佰
=18÷9×(420360÷10)
=2×42036
=84072
10樓:漠漠
840720
18除9,42036乘以2
有沒有四年級的口算!(要稍微簡單點的)
11樓:匿名使用者
口算練習
34 + 56 = 42 - 18 = 9 × 9 = 73 + 18 = 60 ÷ 60 =
59 + 34 = 52 + 13 = 88 ÷ 88 = 52 + 18 = 41 - 33 =
54 + 24 = 55 - 20 = 2 × 5 = 7 × 3 = 93 ÷ 93 =
9 × 6 = 96 ÷ 32 = 42 + 12 = 47 + 32 = 6 × 10 =
73 - 22 = 29 + 57 = 60 - 58 = 8 × 7 = 2 × 2 =
79 ÷ 79 = 65 - 56 = 83 - 15 = 49 ÷ 49 = 67 - 29 =
8 × 2 = 4 × 5 = 70 + 25 = 96 - 94 = 7 × 10 =
88 - 32 = 64 ÷ 32 = 59 - 44 = 3 × 4 = 47 + 35 =
86 - 79 = 79 ÷ 79 = 53 ÷ 53 = 95 - 31 = 4 × 6 =
92 ÷ 92 = 36 + 10 = 15 + 62 = 100 ÷ 50 = 81 - 15 =
39 ÷ 13 = 72 ÷ 18 = 39 ÷ 13 = 49 + 48 = 46 + 23 =
80 - 31 = 36 + 39 = 64 + 22 = 78 ÷ 39 = 66 - 52 =
20 + 18 = 72 ÷ 24 = 8 × 9 = 72 - 60 = 13 + 83 =
50 ÷ 10 = 93 - 75 = 32 - 23 = 31 - 13 = 68 - 28 =
7 × 10 = 38 ÷ 38 = 45 ÷ 45 = 6 × 9 = 50 + 17 =
11 ÷ 11 = 4 × 7 = 91 ÷ 13 = 50 + 36 = 48 ÷ 16 =
10 + 43 = 1 × 9 = 13 + 24 = 65 - 61 = 7 × 10 =
75 ÷ 15 = 37 + 16 = 8 × 5 = 48 - 22 = 7 × 6 =
42 ÷ 14 = 41 + 41 = 53 + 41 = 4 × 9 = 7 × 6 =
10 × 1 = 88 ÷ 44 = 58 - 26 = 9 × 4 = 96 - 41 =
42 ÷ 42 = 80 - 17 = 36 ÷ 18 = 31 + 60 = 4 × 9 =
53 - 21 = 34 + 24 = 53 + 15 = 1 × 9 = 75 + 21 =
1 × 2 = 61 + 38 = 27 + 29 = 9 × 2 = 7 × 3 =
65 + 31 = 31 + 17 = 53 + 38 = 24 + 57 = 87 - 40 =
12樓:匿名使用者
25 -15 -80 = 10 -80 = -7026 -6 -64 = 20 -64 = -4427 + 3 -48 = 30 -48 = -1828 + 12 -32 = 40 -32 = 829 + 21 -16 = 50 -16 = 3430 + 30 + 0 = 60 + 0 = 6031 + 39 + 16 = 70 + 16 = 8632 + 48 + 32 = 80 + 32 = 11233 + 57 + 48 = 90 + 48 = 13834 + 66 + 64 = 100 + 64 = 16435 + 75 + 80 = 110 + 80 = 19036 + 84 + 96 = 120 + 96 = 21637 + 93 + 112 = 130 + 112 = 24238 + 102 + 128 = 140 + 128 = 26839 + 111 + 144 = 150 + 144 = 29440 -30 -140 = 10 -140 = -13041 -21 -124 = 20 -124 = -10442 -12 -108 = 30 -108 = -7843 -3 -92 = 40 -92 = -5244 + 6 -76 = 50 -76 = -2645 + 15 -60 = 60 -60 = 046 + 24 -44 = 70 -44 = 2647 + 33 -28 = 80 -28 = 5248 + 42 -12 = 90 -12 = 7849 + 51 + 4 = 100 + 4 = 10450 + 60 + 20 = 110 + 20 = 13051 + 69 + 36 = 120 + 36 = 15652 + 78 + 52 = 130 + 52 = 18253 + 87 + 68 = 140 + 68 = 20854 + 96 + 84 = 150 + 84 = 23455 -45 -200 = 10 -200 = -19056 -36 -184 = 20 -184 = -16457 -27 -168 = 30 -168 = -13858 -18 -152 = 40 -152 = -11259 -9 -136 = 50 -136 = -8660 + 0 -120 = 60 -120 = -6061 + 9 -104 = 70 -104 = -3462 + 18 -88 = 80 -88 = -863 + 27 -72 = 90 -72 = 1864 + 36 -56 = 100 -56 = 4465 + 45 -40 = 110 -40 = 7066 + 54 -24 = 120 -24 = 9667 + 63 -8 = 130 -8 = 12268 + 72 + 8 = 140 + 8 = 14869 + 81 + 24 = 150 + 24 = 17470 -60 -260 = 10 -260 = -25071 -51 -244 = 20 -244 = -22472 -42 -228 = 30 -228 = -19873 -33 -212 = 40 -212 = -17274 -24 -196 = 50 -196 = -14611 3^3-5
12 4^2-34%
13 3.25-315%
14 7^3+445%
15 12+5268.32-2569
16 123+456-52*8
17 45%+6325
18 1/2+1/3+1/4
19 789+456-78
20 45%+54%-36%
2. 脫式計算(能簡算要簡算)12%
6/7+
13樓:小土豆妹兒
99 - (24 - 16) = 91
65 + (35 - 1) = 99
(2 + 4) * 8 = 48
38 - 25 + 21 = 34
6 * (9 * 1) = 54
9 * (4 + 2) = 54
(16 - 10) * 7 = 42
89 - (4 + 7) = 78
1 * (4 + 1) = 5
1 * (77 - 68) = 9
5 * (78 - 70) = 40
8 * (8 * 1) = 64
1 * 9 * 4 = 36
9 * 5 + 29 = 74
2 * 6 - 6 = 6
90 - 2 * 1 = 88
98 - (2 + 1) = 95
7 * (4 + 1) = 35
6 * 1 + 1 = 7
73 - (42 + 1) = 30
99 - (96 - 86) = 89
95 - 15 - 13 = 67
15 - 7 * 1 = 8
2 * (5 + 1) = 12
8 * (83 - 80) = 24
1 + (1 + 1) = 3
3 * 6 - 6 = 12
16 + 31 - 40 = 7
7 * 9 + 14 = 77
8 * (7 * 1) = 56
62 + (1 + 0) = 63
(51 - 48) * 1 = 3
9 * 1 + 7 = 16
98 - 6 * 2 = 86
8 * (4 + 1) = 40
2 * (2 + 1) = 6
5 + (100 - 39) = 66
6 * (1 + 2) = 18
51 - (19 + 7) = 25
3 * (7 * 1) = 21
(64 - 61) * 2 = 6
90 - 2 * 1 = 88
(1 + 0) * 1 = 1
25 - (5 + 10) = 10
11 + (83 - 73) = 21
36 + 35 - 4 = 67
8 * 1 + 19 = 27
14 + (9 + 3) = 26
6 * 3 - 1 = 17
8 * 9 + 12 = 84
3 + (71 - 22) = 52
48 - 3 * 1 = 45
2 * (7 * 1) = 14
2 * (37 - 34) = 6
2 * 6 + 33 = 45
(2 + 5) * 9 = 63
4 * (1 + 7) = 32
4 * 3 + 63 = 75
9 * (2 + 2) = 36
97 - 16 - 27 = 54
22 + 3 * 7 = 43
9 * (5 * 1) = 45
(82 - 75) * 1 = 7
4 * (84 - 76) = 32
(5 + 3) * 4 = 32
90 - 5 * 3 = 75
38 + (93 - 37) = 94
2 * 9 + 37 = 55
(1 + 1) * 2 = 4
92 - 59 - 19 = 14
11 + 7 * 1 = 18
5 * (69 - 60) = 45
51 + (83 - 67) = 67
(1 + 6) * 4 = 28
(75 - 66) * 6 = 54
2 * (1 * 1) = 2
9 * 9 - 8 = 73
8 * (54 - 46) = 64
3 * (6 + 1) = 21
24 + 35 + 18 = 77
1 * 3 * 6 = 18
(4 + 4) * 7 = 56
3 * (13 - 7) = 18
5 + 60 + 31 = 96
(21 - 20) * 3 = 3
4 * 8 - 1 = 31
94 - 37 - 13 = 44
62 - 7 - 53 = 2
(4 + 4) * 2 = 16
50 + 39 - 29 = 60
3 * (6 + 1) = 21
88 - (25 + 7) = 56
57 - 53 + 21 = 25
5 * 1 + 15 = 20
(41 - 33) * 4 = 32
17 + (1 + 4) = 22
28 + 61 - 1 = 88
23 + (11 + 9) = 43
4 * (69 - 63) = 24
7 * 7 - 2 = 47
------------------------97 - 7 - 62 = 28
27 / (36 - 27) = 3
7 * (8 * 1) = 56
6 + 9 * 1 = 15
24 / (21 / 7) = 8
74 + (80 - 71) = 83
7 * (6 / 6) = 7
86 - 2 - 81 = 3
6 / (12 / 4) = 2
35 + 61 - 16 = 80
5 * (8 - 7) = 5
(11 + 1) / 6 = 2
8 / 1 + 5 = 13
28 / 4 * 8 = 56
56 / 8 * 8 = 56
(53 - 32) / 3 = 7
40 / (98 - 93) = 8
42 / (1 + 5) = 7
5 * (24 / 6) = 20
40 / (60 - 55) = 8
7 * 2 + 2 = 16
36 / (6 * 1) = 6
51 - 7 + 30 = 74
12 / (52 - 48) = 3
38 + 28 / 4 = 45
1 * 4 * 5 = 20
28 + (18 + 32) = 78
4 + 27 / 3 = 13
18 / 9 * 1 = 2
15 / (46 - 41) = 3
(24 + 11) / 5 = 7
6 + (47 - 9) = 44
36 - 35 + 5 = 6
4 * (35 / 7) = 20
94 - 92 + 35 = 37
8 * 1 / 1 = 8
4 * 7 - 4 = 24
81 / 9 + 1 = 10
7 * (1 + 0) = 7
48 + (2 + 4) = 54
5 * (6 / 6) = 5
63 / (1 + 8) = 7
24 + (76 - 5) = 95
41 - (35 + 2) = 4
73 - (81 - 56) = 48
2 * 4 / 2 = 4
27 / 9 * 1 = 3
48 / 8 + 19 = 25
73 - 49 / 7 = 66
3 * (35 - 26) = 27
(67 - 25) / 7 = 6
15 / (1 + 4) = 3
(6 + 1) * 9 = 63
41 + 47 - 75 = 13
37 + 6 / 1 = 43
4 * 6 / 6 = 4
17 + 6 * 8 = 65
5 + 9 + 6 = 20
52 - 2 * 2 = 48
94 - 3 - 73 = 18
27 + (3 + 3) = 33
8 * (4 * 1) = 32
37 + 6 * 9 = 91
21 / (3 / 1) = 7
24 / 4 + 6 = 12
45 / (4 + 1) = 9
6 * 1 * 6 = 36
94 - 64 / 8 = 86
21 / 7 * 1 = 3
99 - (98 - 7) = 8
8 * (4 * 2) = 64
33 + 12 / 3 = 37
4 * 1 + 23 = 27
39 + (36 - 7) = 68
19 + 12 / 2 = 25
24 + 4 * 4 = 40
54 - 10 + 2 = 46
78 - 36 / 9 = 74
24 / (5 + 1) = 4
90 - 42 / 7 = 84
9 * (1 * 8) = 72
8 * (24 / 6) = 32
(1 + 7) * 1 = 8
6 * (4 * 1) = 24
56 - 7 + 32 = 81
6 * 7 / 7 = 6
99 - (78 - 71) = 92
(12 + 44) / 7 = 8
2 * (14 / 2) = 14
49 / 7 + 1 = 8
15 / (5 / 1) = 3
48 + 16 - 54 = 10
7 * 1 + 1 = 8
11 + (91 - 82) = 20
9 + 3 + 30 = 42
30 / (6 * 1) = 5
8 * 4 - 30 = 2
28 - 1 + 39 = 66
26 + 10 + 26 = 62
66 + (97 - 82) = 81
-----------------------------10 + 1 + 47 = 58
(5 + 3) * 9 = 72
3 * 7 + 11 = 32
24 / (27 / 9) = 8
99 - (97 - 79) = 81
(2 + 5) * 3 = 21
32 / 4 / 2 = 4
2 * (1 + 2) = 6
52 + (100 - 76) = 76
2 + 5 + 41 = 48
9 / (24 / 8) = 3
6 + 3 / 3 = 7
4 * (1 + 2) = 12
62 + (29 - 23) = 68
8 + (93 - 11) = 90
6 + 6 * 4 = 30
5 + 4 * 2 = 13
62 - (67 - 46) = 41
8 * (1 + 2) = 24
34 + (6 + 10) = 50
7 * (2 * 1) = 14
6 / (6 / 3) = 3
52 + (94 - 61) = 85
6 * 6 - 30 = 6
21 / (1 + 2) = 7
3 / 1 / 3 = 1
6 * (28 / 4) = 42
9 + 36 / 4 = 18
43 + (95 - 86) = 52
(96 - 90) / 6 = 1
66 - 9 + 7 = 64
28 / (72 - 65) = 4
9 * 5 + 14 = 59
60 + (3 + 13) = 76
2 * (1 * 7) = 14
95 - (4 - 1) = 92
59 - (19 - 18) = 58
48 / 6 / 4 = 2
24 / 4 * 7 = 42
6 * (5 * 1) = 30
9 * (6 / 2) = 27
96 - (13 + 44) = 39
3 * (4 + 3) = 21
99 - 4 - 7 = 88
65 - 10 - 38 = 17
6 * (3 * 1) = 18
16 / (8 / 4) = 8
18 / 2 + 1 = 10
76 - 14 / 2 = 69
54 + (88 - 78) = 64
62 + 56 / 8 = 69
(1 + 1) / 2 = 1
(1 + 1) * 3 = 6
(99 - 36) / 7 = 9
28 / (72 - 68) = 7
3 + (24 + 3) = 30
49 - (42 - 23) = 30
81 - 10 / 5 = 79
(67 - 27) / 5 = 8
5 * (56 - 48) = 40
1 * 3 * 2 = 6
5 / (35 / 7) = 1
18 / 2 + 6 = 15
49 / 7 * 5 = 35
(60 - 57) * 9 = 27
17 + 7 / 1 = 24
100 - (96 - 95) = 99
(34 - 30) / 2 = 2
6 * 1 + 5 = 11
(22 - 18) * 3 = 12
2 * 1 + 0 = 2
27 + 24 / 4 = 33
31 + 18 / 2 = 40
64 - 14 / 2 = 57
67 - (1 + 1) = 65
14 + (10 + 6) = 30
83 - 9 / 1 = 74
94 - (25 + 18) = 51
6 / 2 + 84 = 87
5 + 58 - 6 = 57
5 * 1 * 1 = 5
91 - 8 * 5 = 51
3 * 4 + 16 = 28
36 / 4 - 2 = 7
7 * 4 - 25 = 3
5 * (21 / 7) = 15
(9 - 3) * 8 = 48
9 / (45 / 5) = 1
(2 + 5) * 5 = 35
9 * (24 / 3) = 72
15 + 9 / 1 = 24
8 / (1 + 3) = 2
91 - 63 / 7 = 82
3 + (22 + 63) = 88
6 / (19 - 18) = 6
9 * 1 * 6 = 54
3 * (32 / 8) = 12
14 / (1 + 1) = 7
83 - 1 * 6 = 77
97 - 1 - 72 = 24
3 x十6 一2 x十1 二，3 x十6 一2 x十1 二
3x 18 2x 2 12 x 16 12 x 12 16 解得，x 4 付費內容限時免費檢視 回答好的，馬上給你解答 提問謝謝老師 我還沒看到解答案 我怎麼評價 回答解 2 x十1 二6 x一3 2x 2 6x 18 不要著急，打字需要時間 我還沒寫完提問好 回答解 2 x十1 二6 x一3 2x...
定義n 1x2x3x xn計算1 十2x2 十3x3 十4x4 十 7x
1 1 2x2 3 1 x2 3 2 3x3 4 1 x3 4 3 6x6 7 1 x6 7 6 7x7 8 1 x7 8 7 加起回來 1 3 2 4 3 7 6 8 7 8 2 1 8 1 40319.include stdafx.h vc 6.0加上這一答行.include stdio.h i...
1x5十2x5十3x5十4x5十5x5十20x5 x
1x5十2x5十3x5十4x5十5x5 十20x5 x5 1 2 3 4 5 20 5 5 1 20 10 25 21 250 5250 1x5 5 2x5 10 3x5 15 4x5 20 5x5 1 5,2 10,3 15,4 20,5 25 分析 1 5 5 2 5 10 3 5 15 4 5...