78-39+22-41的简便计算是什么?

发布网友 发布时间:2022-04-20 09:58

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热心网友 时间:2023-10-01 06:09

先给你这些吧,没有乘方的
(1)(-9)-(-13)+(-20)+(-2)=
(2) 3+13-(-7)÷6=
(3) (-2)-8-14-13=
(4) (-7)×(-1) ÷7+8 =
(5) (-11)×4-(-18) ÷18 =
(6) 4+(-11)-1÷(-3) =
(7) (-17)-6-16÷(-18) =
(8) 5÷7+(-1)-(-8) =
(9) (-1)×(-1)+15+1 =
(10) 3-(-5)×3÷(-15) =
(11) 6×(-14)-(-14)+(-13) =
(12) (-15)×(-13)-(-17)-(-4) =
(13) (-20) ÷13÷(-7)+11 =
(14) 8+(-1) ÷7+(-4) =
(15) (-13)-(-9)×16×(-12) =
(16) (-1)+4×19+(-2) =
(17) (-17)×(-9)-20+(-6) =
(18) (-5) ÷12-(-16)×(-15) =
(19) (-3)-13×(-5)×13=
(20) 5+(-7)+17-10 =
(21) (-10)-(-16)-13×(-16) =
(22) (-14)+4-19-12 =
(23) 5×13÷14÷(-10) =
(24) 3×1×17÷(-10) =
(25) 6+(-12)+15-(-15) =
(26) 15÷9÷13+(-7) =
(27) 2÷(-10)×1-(-8) =
(28) 11÷(-19)+(-14)-5 =
(29) 19-16+18÷(-11) =
(30) (-1)÷19+(-5)+1 =
(31) (-5)+19÷10×(-5) =
(32) 11÷(-17)×(-13)×12 =
(33) (-8)+(-10)÷8×17 =
(34) 7-(-12)÷(-1)+(-12) =
(35) 12+12-19+20 =
(36) (-13)×(-11)×20+(-4) =
(37) 17÷(-2)-2×(-19) =
(38) 1-12×(-16)+(-9) =
(39) 13×(-14)-15÷20 =
(40) (-15)×(-13)-6÷(-9) =
(41) 15×(-1)÷12+7 =
(42) (-13)+(-16)+(-14)-(-6) =
(43) 14×12×(-20)×(-13) =
(44) 17-9-20+(-10) =
(45) 12÷(-14)+(-14)+(-2) =
(46) (-15)-12÷(-17)-(-3) =
(47) 6-3÷9÷(-8) =
(48) (-20)×(-15)×10×(-4) =
(49) 7÷(-2)×(-3)÷(-14) =
(50) 13÷2×18×(-7) =
(51) 13×5+6+3=
(52) (-15)÷5÷3+(-20) =
(53) 19×4+17-4 =
(54) (-11)-(-6)×(-4)×(-9) =
(55) (-16)+16-(-8)×(-13) =
(56) 16÷(-1)÷(-10)÷(-20) =
(57) (-1)-(-9)-9÷(-19) =
(58) 13×20×(-13)×4 =
(59) 11×(-6)-3+18 =
(60) (-20)+(-12)+(-1)+(-12) =
(61) (-19)-3×(-13)×4 =
(62) (-13)÷3-5×8 =
(63) (-15)÷1+17×(-18) =
(64) (-13)÷3÷19÷8 =
(65) (-3)÷(-13)÷20×5 =
(66) 3÷12÷(-18)-18 =
(67) 5×(-19)÷13+(-6) =
(68) 4+4×(-19)-11 =
(69) (-2)+17-5+(-1) =
(70) 9+(-3)×19×(-19) =
(71) (-12)-(-6)+17÷2 =
(72) 15×(-5)-(-3)÷5 =
(73) (-10)×2÷(-1)÷4 =
(74) (-8)×16÷(-6)+4=
(75) 2-11+12+10 =
(76) (-3)+(-20)×(-7)×(-9) =
(77) (-15)+8-17÷7 =
(78) (-14)×10+18×2 =
(79) (-7)+2-(-17)×19 =
(80) (-7)÷18÷1+1 =
(81) 11÷(-9)-(-16)÷17 =
(82) 15+5×6-(-8) =
(83) (-13)×(-18)+18÷(-6) =
(84) 11-(-1)÷11×(-6) =
(85) (-4)+(-12)+19÷6 =
(86) (-18)÷(-1)÷(-19)+2 =
(87) 9×(-8)×(-6)÷11 =
(88) 20×(-3)×(-5)+1 =
(89) (-18)-2+(-11)÷20 =
(90) 15×1+4×17 =
(91) 1-10+(-14)÷(-1) =
(92) 10+(-4)×(-19)+(-12) =
(93) 15÷14÷5×7 =
(94) 8+(-13)÷3+1 =
(95) (-14)+6+(-2)×(-14) =
(96) (-5)÷(-13)÷4+7 =
(97) (-15)÷(-2)÷(-12)+(-2) =
(98) (-17)-(-20)-20×(-10) =
(99) (-7)-10-13÷3 =
(100) (-20)+(-18)+11+9=
1 -18
2 103÷6
3 -37
4 9
5 -43
6 -(20÷3)
7 -(199÷9)
8 54÷7
9 17
10 2
11 -83
12 216
13 1021÷91
14 27÷7
15 -1741
16 73
17 127
18 -(2885÷12)
19 842
20 5
21 214
22 -41
23 -(13÷28)
24 -(51÷10)
25 24
26 -(268÷39)
27 39÷5
28 -(372÷19)
29 15÷11
30 -(77÷19)
31 -(29÷2)
32 1716÷17
33 -(117÷4)
34 -17
35 25
36 2856
37 59÷2
38 184
39 -(731÷4)
40 587÷3
41 23÷4
42 -37
43 43680
44 -22
45 -(118÷7)
46 -(192÷17)
47 145÷24
48 -12000
49 -(3÷4)
50 -819
51 74
52 -21
53 89
54 205
55 -104
56 -(2÷25)
57 161÷19
58 -13520
59 -51
60 -45
61 137
62 -(133÷3)
63 -321
64 -(13÷456)
65 3÷52
66 -(1297÷72)
67 -(173÷13)
68 -83
69 9
70 1092
71 5÷2
72 -(372÷5)
73 5
74 76÷3
75 13
76 -1263
77 -(66÷7)
78 -104
79 318
80 11÷18
81 -(43÷153)
82 53
83 231
84 115÷11
85 -(77÷6)
86 20÷19
87 432÷11
88 301
89 -(411÷20)
90 83
91 5
92 74
93 3÷2
94 14÷3
95 20
96 369÷52
97 -(21÷8)
98 203
99 -(64÷3)
100 -18

热心网友 时间:2023-10-01 06:10

初一年级第七周数学练习题

一.填空:
1.若a 0,则a+ = .若a-(b-c)=d,则a= 。
2.a与b互为相反数,c与d互为倒数,x的绝对值最小的数,则cd+(a+b)+x= 。
3.将下列各式写成省略加号的和的形式,并合理交换加数的位置。
(1)(+16)+(-29)-(+11)+(+9)= ;
(2)(+ )-5+(- )-(+ )+(- )= ;
4.某一河段的警戒水位为50.2米,最高水位为55.4米,平均水位为43.5米,最低水位为28.3米,如果取警戒水位作为0点,则最高水位为 ,平均水位为 最低水位为 (高于警戒水位取正数)
5.有理数中,所有整数的和等于 .
6.已知两数5 和-6 ,这两个数的相反数的和是 ,两数和的相反数是 ,两数和的绝对值是 .
7..若 , ,则 _____0, _______0。
8.计算-1÷9× =___,从-1中减去- 与 的和,列式为: ,所得的差是 。
9.能使 成立的有理数x有 。若∣a∣+∣b∣=0,则a与b的大小关系是 。
10.-7的倒数是___,它的相反数是___,它的绝对值是___; 的倒数是__ -2.5的倒数是___;倒数等于它本身的有理数是___。
11.实数 在数轴上的位置如图所示,则下列结论正确的是( )
A、 B、
C、 D、
二.计算:
-30-(+8)-(+6)-(-17) - - + - (-2.5)+(+ )+(- )+(+1 )

|(- )+(- )|(- )+ | 用简便方法计算:

2 × ÷(-9+19)

三.解决问题:
1.已知 求 的值。

2.若a,b互为相反数,c,d互为倒数,m的绝对值是1,求 的值。

3.为了保护广大消费者的利益,最近工商管理人员在一家面粉店抽查了20袋面 粉,称得它们的重量如下(单位:千克):
25,25,24,24,23,24,24,25,26,25,
23,23,24,25,25,24,24,26,26,25,
请你计算这20袋面粉的总重量和每袋的平均重量,你能找出比较简单的计算方法吗?请你试试,根据你的计算结果,你对这次检查情况有什么看法?(每袋面粉的标准重量为:25千克)

热心网友 时间:2023-10-01 06:10

(1)(-9)-(-13)+(-20)+(-2)=
(2) 3+13-(-7)÷6=
(3) (-2)-8-14-13=
(4) (-7)×(-1) ÷7+8 =
(5) (-11)×4-(-18) ÷18 =
(6) 4+(-11)-1÷(-3) =
(7) (-17)-6-16÷(-18) =
(8) 5÷7+(-1)-(-8) =
(9) (-1)×(-1)+15+1 =
(10) 3-(-5)×3÷(-15) =
(11) 6×(-14)-(-14)+(-13) =
(12) (-15)×(-13)-(-17)-(-4) =
(13) (-20) ÷13÷(-7)+11 =
(14) 8+(-1) ÷7+(-4) =
(15) (-13)-(-9)×16×(-12) =
(16) (-1)+4×19+(-2) =
(17) (-17)×(-9)-20+(-6) =
(18) (-5) ÷12-(-16)×(-15) =
(19) (-3)-13×(-5)×13=
(20) 5+(-7)+17-10 =
(21) (-10)-(-16)-13×(-16) =
(22) (-14)+4-19-12 =
(23) 5×13÷14÷(-10) =
(24) 3×1×17÷(-10) =
(25) 6+(-12)+15-(-15) =
(26) 15÷9÷13+(-7) =
(27) 2÷(-10)×1-(-8) =
(28) 11÷(-19)+(-14)-5 =
(29) 19-16+18÷(-11) =
(30) (-1)÷19+(-5)+1 =
(31) (-5)+19÷10×(-5) =
(32) 11÷(-17)×(-13)×12 =
(33) (-8)+(-10)÷8×17 =
(34) 7-(-12)÷(-1)+(-12) =
(35) 12+12-19+20 =
(36) (-13)×(-11)×20+(-4) =
(37) 17÷(-2)-2×(-19) =
(38) 1-12×(-16)+(-9) =
(39) 13×(-14)-15÷20 =
(40) (-15)×(-13)-6÷(-9) =
(41) 15×(-1)÷12+7 =
(42) (-13)+(-16)+(-14)-(-6) =
(43) 14×12×(-20)×(-13) =
(44) 17-9-20+(-10) =
(45) 12÷(-14)+(-14)+(-2) =
(46) (-15)-12÷(-17)-(-3) =
(47) 6-3÷9÷(-8) =
(48) (-20)×(-15)×10×(-4) =
(49) 7÷(-2)×(-3)÷(-14) =
(50) 13÷2×18×(-7) =
(51) 13×5+6+3=
(52) (-15)÷5÷3+(-20) =
(53) 19×4+17-4 =
(54) (-11)-(-6)×(-4)×(-9) =
(55) (-16)+16-(-8)×(-13) =
(56) 16÷(-1)÷(-10)÷(-20) =
(57) (-1)-(-9)-9÷(-19) =
(58) 13×20×(-13)×4 =
(59) 11×(-6)-3+18 =
(60) (-20)+(-12)+(-1)+(-12) =
(61) (-19)-3×(-13)×4 =
(62) (-13)÷3-5×8 =
(63) (-15)÷1+17×(-18) =
(64) (-13)÷3÷19÷8 =
(65) (-3)÷(-13)÷20×5 =
(66) 3÷12÷(-18)-18 =
(67) 5×(-19)÷13+(-6) =
(68) 4+4×(-19)-11 =
(69) (-2)+17-5+(-1) =
(70) 9+(-3)×19×(-19) =
(71) (-12)-(-6)+17÷2 =
(72) 15×(-5)-(-3)÷5 =
(73) (-10)×2÷(-1)÷4 =
(74) (-8)×16÷(-6)+4=
(75) 2-11+12+10 =
(76) (-3)+(-20)×(-7)×(-9) =
(77) (-15)+8-17÷7 =
(78) (-14)×10+18×2 =
(79) (-7)+2-(-17)×19 =
(80) (-7)÷18÷1+1 =
(81) 11÷(-9)-(-16)÷17 =
(82) 15+5×6-(-8) =
(83) (-13)×(-18)+18÷(-6) =
(84) 11-(-1)÷11×(-6) =
(85) (-4)+(-12)+19÷6 =
(86) (-18)÷(-1)÷(-19)+2 =
(87) 9×(-8)×(-6)÷11 =
(88) 20×(-3)×(-5)+1 =
(89) (-18)-2+(-11)÷20 =
(90) 15×1+4×17 =
(91) 1-10+(-14)÷(-1) =
(92) 10+(-4)×(-19)+(-12) =
(93) 15÷14÷5×7 =
(94) 8+(-13)÷3+1 =
(95) (-14)+6+(-2)×(-14) =
(96) (-5)÷(-13)÷4+7 =
(97) (-15)÷(-2)÷(-12)+(-2) =
(98) (-17)-(-20)-20×(-10) =
(99) (-7)-10-13÷3 =
(100) (-20)+(-18)+11+9=
1 -18
2 103÷6
3 -37
4 9
5 -43
6 -(20÷3)
7 -(199÷9)
8 54÷7
9 17
10 2
11 -83
12 216
13 1021÷91
14 27÷7
15 -1741
16 73
17 127
18 -(2885÷12)
19 842
20 5
21 214
22 -41
23 -(13÷28)
24 -(51÷10)
25 24
26 -(268÷39)
27 39÷5
28 -(372÷19)
29 15÷11
30 -(77÷19)
31 -(29÷2)
32 1716÷17
33 -(117÷4)
34 -17
35 25
36 2856
37 59÷2
38 184
39 -(731÷4)
40 587÷3
41 23÷4
42 -37
43 43680
44 -22
45 -(118÷7)
46 -(192÷17)
47 145÷24
48 -12000
49 -(3÷4)
50 -819
51 74
52 -21
53 89
54 205
55 -104
56 -(2÷25)
57 161÷19
58 -13520
59 -51
60 -45
61 137
62 -(133÷3)
63 -321
64 -(13÷456)
65 3÷52
66 -(1297÷72)
67 -(173÷13)
68 -83
69 9
70 1092
71 5÷2
72 -(372÷5)
73 5
74 76÷3
75 13
76 -1263
77 -(66÷7)
78 -104
79 318
80 11÷18
81 -(43÷153)
82 53
83 231
84 115÷11
85 -(77÷6)
86 20÷19
87 432÷11
88 301
89 -(411÷20)
90 83
91 5
92 74
93 3÷2
94 14÷3
95 20
96 369÷52
97 -(21÷8)
98 203
99 -(64÷3)

热心网友 时间:2023-10-01 06:11

2+64+5564+456+452645+(-265215416546516549841619849194919841981974195)+1564145411519819198419819819819819111919141784154198498198198198191919191919+2233333333333333333333
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