① 小学四年级脱式计算大全带过程
脱式计算。
408-12×24
(46+28)×60
42×50-1715÷5
32+105÷5
(108+47)×52
420×(-238)
(4121+2389)÷7
671×15-974
469×12+1492
405×(3213-3189)
5000-56×23
125×(97-81)
6942+480÷3
304×32-154
20+80÷4-20=
100÷(32-30)×0=
25×4-12×5=
70×〔(42-42)÷18〕= 75×65+75×35=
用简便方法计算下面各题
1、89+124+11+26+48
2、875-147-23
3.25×125×40×8
4、147×8+8×53
5、125×64
6、0.9+1.08+0.92+0.1
用简便方法计算
①89+124+11+26+48
②875-147-23
③147×8+8×53
④125×64
计算下面各题.
1.280+840÷24×5
2.85×(95-1440÷24)
3.58870÷(105+20×2) 4.80400-(4300+870÷15)
5.1437×27+27×563
6.81432÷(13×52+78)
7.125×(33-1)
8.37.4-(8.6+7.24-6.6)
计算。(1∶1)
(1)156×107-7729
(2)37.85-(7.85+6.4)
(3)287×5+96990÷318 (4)1554÷[(72-58)×3]
脱式计算
2800÷ 100+789
(947-599)+76×64
1.36×(913-276÷23)
2.(93+25×21)×9
3.507÷13×63+498
4.723-(521+504)÷25
5.384÷12+23×371
6.(39-21)×(396÷6)
(1)156×[(17.7-7.2)÷3]
(2)[37.85-(7.85+6.4)] ×30
(3)28×(5+969.9÷318)
(4)81÷[(72-54)×9]
57×12-560÷35
848-640÷16×12
960÷(1500-32×45)
[192-(54+38)]×67
138×25×4
(13×125)×(3×8)
(12+24+80)×50
704×25 25×32×125
32×(25+125)
178×101-178
84×36+64×84
75×99+2×75
83×102-83×2
98×199
123×18-123×3+85×123
50×(34×4)×3 25×(24+16)
178×99+178
79×42+79+79×57
7300÷25÷4 8100÷4÷75
75×27+19×2 5
31×870+13×310
4×(25×65+25×28)
138×25×4
(13×125)×(3×8)
(12+24+80)×50
25×32×125
32×(25+125)
102×76 58×98
178×101-178
84×36+64×84
75×99+2×75
83×102-83×2
98×199
123×18-123×3+85×123
50×(34×4)×3
25×(24+16)
178×99+178
79×42+79+79×57
7300÷25÷4
8100÷4÷75
② 50道五年级脱式计算题带过程和答案,有答案和过程的加分,谢谢了。
星座大全?
星座都是按阳历出生日期算的,下面来看一下十二星座都有什么:
1、白羊座(3月21日-4月19日)
白羊座的人比较活泼开朗,有胆识,比较善于发现问题,好学好问,脾气不是很好,属于刀子嘴豆腐心那种吧,说过的就忘了,心比较大。
2、金牛座(4月20日-5月20日)
金牛座的人比较保守固执,比较稳定,不愿意频繁的变动,工作中会很努力,投资很有眼光。
3、双子座(5月21日-6月21日)
双子座可以说是最八卦了,对新鲜事物非常好奇,非常机灵,招人喜欢。
4、巨蟹座(6月22日-7月22日)
巨蟹座的人非常顾家,为人踏实实诚,是一个可靠的人,生活中不会斤斤计较。
5、狮子座(7月23日-8月22日)
狮子座的人非常热情,脾气比较暴躁,自尊心比较强,非常看重别人对他的看法。
6、处女座(8月23日-9月22日)
处女座的人可以说是完美主义者,什么都要追求完美,比较谦虚,生活中很爱干净。
7、天秤座(9月23日-10月23日)
天秤座的人人缘还是比较好的,善于沟通,会很快跟身边的人打成一片,很会逗人开心,心里有一杆公平的称,但最大的缺点是在决定事情上犹豫不决。
8、天蝎座(10月24日-11月22日)
天蝎座的人做事会比较认真执着,有自己的人生目标,讲义气,身边的朋友会有很多。
9、射手座(11月23日-12月21日)
射手座的人喜欢自由,喜欢什么就去做什么,没有心机,有宽容心,过的比较快乐。
10、魔蝎座(12月22日-1月19日)
摩羯座的人可以说是十二星座中最有上进心的,脚踏实地,做事比较有耐心,值得朋友们信赖。
11、水瓶座(1月20日-2月18日)
水瓶座的人非常聪明,有自己独特的特点,不过在感情上缺乏安全感,需要陪伴。
12、双鱼座(2月19日-3月20日)
双鱼座的人可以说是最温柔善良的,对待感情比较真挚,如遇到双鱼座的请认真对待。
③ 有100道脱式简便计算题带答案和过程吗
1. 0.4×125×25×0.8 =(0.4×25)×(×0.8)=10×100=1000
2. 1.25×(8+10)=1.25×8+1.25×10 =10+12.5=22.5
3.9123-(123+8.8)=9123-123-8.8=9000-8.8=8991.2
4.1.24×8.3+8.3×1.76 =8.3×(1.24+1.76) =8.3×3=24.9
5.9999×1001
=9999×(1000+1)
=9999×1000+9999×1
=10008999
6. 14.8×6.3-6.3×6.5+8.3×3.7
=(14.8-6.5)×6.3+8.3×3.7
=8.3×6.3+8.3×3.7
=8.3×(6.3+3.7)
=8.3×10
=83
7. 1.24+0.78+8.76
=(1.24+8.76)+0.78
=10+0.78
=10.78
8. 933-157-43 =933-(157+43) =933-200 =733
9. 4821-998
=4821-1000+22=3823
10. 32×125×25
=4×8×125×25
=(4×25)×(8×125)
=100×1000
=100000 9048÷26
=(2600+2600+2600+1248)÷26
=2600÷26+2600÷26+2600÷26+1248÷26
=100+100+100+48
=348
11. 2881÷ 43
=(1290+1591)÷ 43
=1290÷43+1591÷43
=30+37 =67 3.2×42.3×3.75-12.5×0.423×16
=3.2×42.3×3.75-1.25×42.3×1.6
=42.3×(3.2×3.75-1.25×1.6)
=42.3×(4×0.8×3.75-1.25×4×0.4)
=42.3×(4×0.4×2×3.75-1.25×4×0.4)
=42.3×(4x0.4x7.5-1.25x4x0.4)
=42.3×[4×0.4×(7.5-1.25)]
=42.3×[4×0.4×6.25]
=42.3×(4×2.5) =423
12. 1.8+18÷1.5-0.5×0.3 =1.8+12-0.15=13.8-0.15 =13.65
13. 6.5×8+3.5×8-47 =52+28-47 =80-47 =33 (80-9.8)×5分之2-1.32 =70.2X2/5-1.32=28.08-1.32 =26.76
14. 8×7分之4÷[1÷(3.2-2.95)] =8×4/7÷[1÷0.25]=8×4/7÷4 =8/7
15. 2700×(506-499)÷900 =2700×7÷900 =18900÷900 =21
16. 33.02-(148.4-90.85)÷2.5=33.02-57.55÷2.3=33.02-23.02=10
17. (1÷1-1)÷5.1 =(1-1)÷5.1 =0÷5.1 =0
18. 18.1+(3-0.299÷0.23)×1=18.1+1.7×1 =18.1+1.7 =19.8
19. 9000÷72×(1.25×0.7×8)=9000÷72×7=125×7=875
20. 61-(1.25+2.5×0.7)=61-3=58
21. [(10-0.8)+9.85]-2÷0.125=19.05-2÷0.125=19.05-16=13.05
22. 5.4÷1.8+240×1.5=3+360=363
23. 9000÷72×(1.25×0.7×8)=9000÷72×7=125×7=875
24. 61-(1.25+2.5×0.7)=61-3=58
25. [(10-0.8)+9.85]-2÷0.125=19.05-2÷0.125=19.05-16=3.05
26. 408-12×24= 408 - 288= 120
27. (46+28)×60= 74 x 60= 4440
28. 42×50-17 = 2100- 17 = 2083
29. 32+105÷5 = 32 + 21= 53
30. 420×(327-238) = 420 x 89 = 37380
31. (4121+2389)÷7 = 6510 ÷7 = 930
32. 3.416÷(0.016×35) = 3.416 ÷0.56 = 6.1
33. 0.8×[(10-6.76)÷1.2] = 0.8 x(3.24÷1.2) = 0.8 x 2.7 = 2.16
34. 5.67×0.2-0.62 = 1.134-0.62 = 0.514
35.0.4×0.7×0.25 = 0.4 x 0.2 5 x 0.7 = 0.1 x 0.7 = 0.07
36. 0.78+5.436+1 = 6.216 +1 = 7.216
37. 30.8÷[14-(9.85+1.07)] = 30.8 ÷ (14 - 10.92) = 30.8÷3.08 = 10
38. [60-(9.5+28.9)]÷0.18 = (60- 38.4)÷0.18 = 21.6 ÷0.18 = 120
39. 2.881÷0.43-0.24×3.5 = 6.7 - 0.24 x3.5 = 6.7 - 0.84 = 5.86
40. 20×[(2.44-1.8)÷0.4+0.15] = 20x (0.64 ÷0.4 +0.15)= 20x(1.6 +0.15) = 20 x1.75 = 35
41. 28-(3.4+1.25×2.4) = 28 - (3.4 + 3) = 28 - 6.4 = 21.6
42. 2.55×7.1+2.45×7.1 = (2.55 + 2.45) x7.1 = 5 x7.1=35.5
43. 0.8×〔15.5-(3.21+5.79)〕 = 0.8 x (15.5 - 9) = 0.8 x 6.5 = 5.2
44.(31.8+3.2×4)÷5 = (31.8 + 12.8)÷5 = 44.6÷5 = 8.92
45. 31.5×4÷(6+3) = 126 ÷ 9 = 14
46. 2÷2.5+2.5÷2 = 0.8 + 1.25 =2.05
47. 194-64.8÷1.8×0.9 = 194 -36 x0.9 = 194-32.4 = 161.65180-705×6 = 5180 - 4230=950
48. 24÷2.4-2.5×0.8 =10 -2=8
49. 405×(3213-3189) =405x24 = 9720
59. 125×(97-81) =125x16 =2000
60. 6942+480÷3 = 6942 + 160 = 6782
61. 20+80÷4-20 = 20 + 20 -20 = 40 -20 = 20
62. 100÷(32-30)×0 = 100 ÷2 x0= 50 x0 = 0
63. 25×4-12×5 = 100 - 60 = 40
64. 70×〔(42-42)÷18〕=70 x (0÷18) = 70x0 = 0
65. 75×65+75×35 = 75 x (65 +35) = 75x100 = 7500
66. 6-1.6÷4= 6- 0.4 = 5.6
67. 5.38+7.85-5.37= 13.23 - 5.37=7.86
68. 7.2÷0.8-1.2×5=9 - 6 =3
69. 6-1.19×3-0.43= 6-3.57 - 0.43 = 6- (3.57 + 0.43) = 6-4 = 2
70. 6.5×(4.8-1.2×4)= 6.5 x(4.8 - 4.8 )=6.5 x0 = 0
71. 0.68×1.9+0.32×1.9 = (0.68 + 0.32) x1.9 = 1 x 1.9 = 1.9
72. 10.15-10.75×0.4-5.7 = 10.15 - 4.3 - 5.7 = 10.15 -(4.3 + 5.7)=10.15 - 10 =0.15
73. 5.8×(3.87-0.13)+4.2×3.74 = 5.8 x 3.74 +4.2 x 3.74 = (5.8 +4.2)x3.74 = 10 x 3.74 = 37.4
74. 32.52-(6+9.728÷3.2)×2.5 = 32.52 - (6+3.04)x2.5 = 32.52 - 9.02 x 2.5 = 32.52 -22.55 = 9.97
75.(136+64)×(65-345÷23)= 200x(65-15) = 200x 50=10000
76. 0.4×125×25×0.8 =(0.4×25)×(125×0.8)=10×100=1000
77. 1.25×(8+10) =1.25×8+1.25×10=10+12.5=22.5
78. 9123-(123+8.8) =9123-123-8.8=9000-8.8=8991.2
79. 1.24×8.3+8.3×1.76 =8.3×(1.24+1.76)=8.3×3=24.9
80. 9999×1001 =9999×(1000+1)=9999×1000+9999×1 =10008999
81. 14.8×6.3-6.3×6.5+8.3×3.7 =(14.8-6.5)×6.3+8.3×3.7=8.3×6.3+8.3×3.7
82. 8.3×(6.3+3.7) =8.3×10 =83
83. 1.24+0.78+8.76 =(1.24+8.76)+0.78 =10+0.78 =10.78
84. 933-157-43 =933-(157+43)=933-200=733
85. 4821-998 =4821-1000+2=3823
86. I32×125×25 =4×8×125×25 =(4×25)×(8×125)=100×1000 =100000
87. 9048÷268
=(2600+2600+2600+1248)÷26
=2600÷26+2600÷26+2600÷26+1248÷269
=100+100+100+48
=348
88. 2881÷ 43 =(1290+1591)÷ 434=1290÷43+1591÷43=30+37
89. 1.8+18÷1.5-0.5×0.3 =1.8+12-0.15=13.8-0.15=13.65
90. 6.5×8+3.5×8-47 =52+28-47=80-47
91. (80-9.8)×5分之2-1.32 =70.2X2/5-1.32=28.08-1.32=26.76
92. 8×7分之4÷[1÷(3.2-2.95)]=8×4/7÷[1÷0.25]=8×4/7÷4=8/7
93. 2700×(506-499)÷900 =2700×7÷900 =18900÷900 =21
94. 33.02-(148.4-90.85)÷2.5=33.02-57.55÷2.5=33.02-23.02 =10
95. (1÷1-1)÷5.1 =(1-1)÷5.1 =0÷5.1 =0
96. 18.1+(3-0.299÷0.23)×1=18.1+1.7×1 =18.1+1.7 =19.8
97. 4.1/27+505/2727+131313/272727 =1/27+5*101/(27*101)+13*10101/(27*10101)
=1/27+5/27+13/27=19/27
98. 6.5×8+3.5×8-47 =52+28-47=80-47
99. (80-9.8)×5分之2-1.32 =70.2X2/5-1.32=28.08-1.32=26.76
100. 1.8+18÷1.5-0.5×0.3 =1.8+12-0.15=13.8-0.15=13.65
④ 急需100道脱式简便计算题带答案和过程
1. 0.4×125×25×0.8 =(.4×25)×(125×0.8)=10×100=1000
2. 1.25×(8+10)=1.25×8+1.25×10 =10+12.5=22.5
3.9123-(123+8.8)=9123-123-8.8=9000-8.8=8991.2
4.1.24×8.3+8.3×1.76 =8.3×(1.24+1.76) =8.3×3=24.9
5.9999×1001
=9999×(1000+1)
=9999×1000+9999×1
=10008999
6. 14.8×6.3-6.3×6.5+8.3×3.7
=(14.8-6.5)×6.3+8.3×3.7
=8.3×6.3+8.3×3.7
=8.3×(6.3+3.7)
=8.3×10
=83
7. 1.24+0.78+8.76
=(1.24+8.76)+0.78
=10+0.78
=10.78
8. 933-157-43 =933-(157+43) =933-200 =733
9. 4821-998
=4821-1000+22=3823
10. 32×125×25
=4×8×125×25
=(4×25)×(8×125)
=100×1000
=100000 9048÷26
=(2600+2600+2600+1248)÷26
=2600÷26+2600÷26+2600÷26+1248÷26
=100+100+100+48
=348
11. 2881÷ 43
=(1290+1591)÷ 43
=1290÷43+1591÷43
=30+37 =67 3.2×42.3×3.75-12.5×0.423×16
=3.2×42.3×3.75-1.25×42.3×1.6
=42.3×(3.2×3.75-1.25×1.6)
=42.3×(4×0.8×3.75-1.25×4×0.4)
=42.3×(4×0.4×2×3.75-1.25×4×0.4)
=42.3×(4x0.4x7.5-1.25x4x0.4)
=42.3×[4×0.4×(7.5-1.25)]
=42.3×[4×0.4×6.25]
=42.3×(4×2.5) =423
12. 1.8+18÷1.5-0.5×0.3 =1.8+12-0.15=13.8-0.15 =13.65
13. 6.5×8+3.5×8-47 =52+28-47 =80-47 =33 (80-9.8)×5分之2-1.32 =70.2X2/5-1.32=28.08-1.32 =26.76
14. 8×7分之4÷[1÷(3.2-2.95)] =8×4/7÷[1÷0.25]=8×4/7÷4 =8/7
15. 2700×(506-499)÷900 =2700×7÷900 =18900÷900 =21
16. 33.02-(148.4-90.85)÷2.5=33.02-57.55÷2.3=33.02-23.02=10
17. (1÷1-1)÷5.1 =(1-1)÷5.1 =0÷5.1 =0
18. 18.1+(3-0.299÷0.23)×1=18.1+1.7×1 =18.1+1.7 =19.8
19. 9000÷72×(1.25×0.7×8)=9000÷72×7=125×7=875
20. 61-(1.25+2.5×0.7)=61-3=58
21. [(10-0.8)+9.85]-2÷0.125=19.05-2÷0.125=19.05-16=13.05
22. 5.4÷1.8+240×1.5=3+360=363
23. 9000÷72×(1.25×0.7×8)=9000÷72×7=125×7=875
24. 61-(1.25+2.5×0.7)=61-3=58
25. [(10-0.8)+9.85]-2÷0.125=19.05-2÷0.125=19.05-16=3.05
26. 408-12×24= 408 - 288= 120
27. (46+28)×60= 74 x 60= 4440
28. 42×50-17 = 2100- 17 = 2083
29. 32+105÷5 = 32 + 21= 53
30. 420×(327-238) = 420 x 89 = 37380
31. (4121+2389)÷7 = 6510 ÷7 = 930
32. 3.416÷(0.016×35) = 3.416 ÷0.56 = 6.1
33. 0.8×[(10-6.76)÷1.2] = 0.8 x(3.24÷1.2) = 0.8 x 2.7 = 2.16
34. 5.67×0.2-0.62 = 1.134-0.62 = 0.514
35.0.4×0.7×0.25 = 0.4 x 0.2 5 x 0.7 = 0.1 x 0.7 = 0.07
36. 0.78+5.436+1 = 6.216 +1 = 7.216
37. 30.8÷[14-(9.85+1.07)] = 30.8 ÷ (14 - 10.92) = 30.8÷3.08 = 10
38. [60-(9.5+28.9)]÷0.18 = (60- 38.4)÷0.18 = 21.6 ÷0.18 = 120
39. 2.881÷0.43-0.24×3.5 = 6.7 - 0.24 x3.5 = 6.7 - 0.84 = 5.86
40. 20×[(2.44-1.8)÷0.4+0.15] = 20x (0.64 ÷0.4 +0.15)= 20x(1.6 +0.15) = 20 x1.75 = 35
41. 28-(3.4+1.25×2.4) = 28 - (3.4 + 3) = 28 - 6.4 = 21.6
42. 2.55×7.1+2.45×7.1 = (2.55 + 2.45) x7.1 = 5 x7.1=35.5
43. 0.8×〔15.5-(3.21+5.79)〕 = 0.8 x (15.5 - 9) = 0.8 x 6.5 = 5.2
44.(31.8+3.2×4)÷5 = (31.8 + 12.8)÷5 = 44.6÷5 = 8.92
45. 31.5×4÷(6+3) = 126 ÷ 9 = 14
46. 2÷2.5+2.5÷2 = 0.8 + 1.25 =2.05
47. 194-64.8÷1.8×0.9 = 194 -36 x0.9 = 194-32.4 = 161.65180-705×6 = 5180 - 4230=950
48. 24÷2.4-2.5×0.8 =10 -2=8
49. 405×(3213-3189) =405x24 = 9720
59. 125×(97-81) =125x16 =2000
60. 6942+480÷3 = 6942 + 160 = 6782
61. 20+80÷4-20 = 20 + 20 -20 = 40 -20 = 20
62. 100÷(32-30)×0 = 100 ÷2 x0= 50 x0 = 0
63. 25×4-12×5 = 100 - 60 = 40
64. 70×〔(42-42)÷18〕=70 x (0÷18) = 70x0 = 0
65. 75×65+75×35 = 75 x (65 +35) = 75x100 = 7500
66. 6-1.6÷4= 6- 0.4 = 5.6
67. 5.38+7.85-5.37= 13.23 - 5.37=7.86
68. 7.2÷0.8-1.2×5=9 - 6 =3
69. 6-1.19×3-0.43= 6-3.57 - 0.43 = 6- (3.57 + 0.43) = 6-4 = 2
70. 6.5×(4.8-1.2×4)= 6.5 x(4.8 - 4.8 )=6.5 x0 = 0
71. 0.68×1.9+0.32×1.9 = (0.68 + 0.32) x1.9 = 1 x 1.9 = 1.9
72. 10.15-10.75×0.4-5.7 = 10.15 - 4.3 - 5.7 = 10.15 -(4.3 + 5.7)=10.15 - 10 =0.15
73. 5.8×(3.87-0.13)+4.2×3.74 = 5.8 x 3.74 +4.2 x 3.74 = (5.8 +4.2)x3.74 = 10 x 3.74 = 37.4
74. 32.52-(6+9.728÷3.2)×2.5 = 32.52 - (6+3.04)x2.5 = 32.52 - 9.02 x 2.5 = 32.52 -22.55 = 9.97
75.(136+64)×(65-345÷23)= 200x(65-15) = 200x 50=10000
76. 0.4×125×25×0.8 =(0.4×25)×(125×0.8)=10×100=1000
77. 1.25×(8+10) =1.25×8+1.25×10=10+12.5=22.5
78. 9123-(123+8.8) =9123-123-8.8=9000-8.8=8991.2
79. 1.24×8.3+8.3×1.76 =8.3×(1.24+1.76)=8.3×3=24.9
80. 9999×1001 =9999×(1000+1)=9999×1000+9999×1 =10008999
81. 14.8×6.3-6.3×6.5+8.3×3.7 =(14.8-6.5)×6.3+8.3×3.7=8.3×6.3+8.3×3.7
82. 8.3×(6.3+3.7) =8.3×10 =83
83. 1.24+0.78+8.76 =(1.24+8.76)+0.78 =10+0.78 =10.78
84. 933-157-43 =933-(157+43)=933-200=733
85. 4821-998 =4821-1000+2=3823
86. I32×125×25 =4×8×125×25 =(4×25)×(8×125)=100×1000 =100000
87. 9048÷268
=(2600+2600+2600+1248)÷26
=2600÷26+2600÷26+2600÷26+1248÷269
=100+100+100+48
=348
88. 2881÷ 43 =(1290+1591)÷ 434=1290÷43+1591÷43=30+37
89. 1.8+18÷1.5-0.5×0.3 =1.8+12-0.15=13.8-0.15=13.65
90. 6.5×8+3.5×8-47 =52+28-47=80-47
91. (80-9.8)×5分之2-1.32 =70.2X2/5-1.32=28.08-1.32=26.76
92. 8×7分之4÷[1÷(3.2-2.95)]=8×4/7÷[1÷0.25]=8×4/7÷4=8/7
93. 2700×(506-499)÷900 =2700×7÷900 =18900÷900 =21
94. 33.02-(148.4-90.85)÷2.5=33.02-57.55÷2.5=33.02-23.02 =10
95. (1÷1-1)÷5.1 =(1-1)÷5.1 =0÷5.1 =0
96. 18.1+(3-0.299÷0.23)×1=18.1+1.7×1 =18.1+1.7 =19.8
97. 4.1/27+505/2727+131313/272727 =1/27+5*101/(27*101)+13*10101/(27*10101)
=1/27+5/27+13/27=19/27
98. 6.5×8+3.5×8-47 =52+28-47=80-47
99. (80-9.8)×5分之2-1.32 =70.2X2/5-1.32=28.08-1.32=26.76
100. 1.8+18÷1.5-0.5×0.3 =1.8+12-0.15=13.8-0.15=13.65
⑤ 脱式计算题50道带答案和过程
1.25×(8+10)=1.25×8
⑥ 脱式计算 带过程 带答案
25×32×125
=﹙25×4﹚×﹙8×125﹚
=100×1000
=100000
25×32×5
=﹙25×4﹚×﹙8×5﹚
=100×40
=4000
⑦ 六年级数学100道脱式计算带过程带答案 急急急 !!!
一、6÷3/8 – 3/8 ÷6
=1/6x(3/8-3/8)
=1/6x0
=0
二、4/7 ×5/9 + 3/7 × 5/9
=(4/7+3/7)x5/9
=1x5/9
=5/9
三、5/2 -( 3/2 + 4/5 )
=5/2-3/2-4/5
=1-4/5
=1/5
四、6 ×( 1/2 + 2/3 )
=6x1/2+6x2/3
=3+4
=7
五、8 × 4/5 + 8 × 11/5
=8x(4/5+11/5)
=8x3
=24
六、31 × 5/6 – 5/6
=(31-1)x5/6
=30x5/6
=25
七、4/5 × 25/16 + 2/3 × 3/4
=5/4+1/2
=5/4+2/4
=7/4
八、101 × 1/5 – 1/5 × 21
=(101-21)x1/5
=80x1/5
=16
九、解比例:
8 : x = 24 : 15 x : 0.15 = 3.6 : 910 1.2x = 45
2.4 : 135 = 12 : x 110 : x = 0.2 : 14 3.6 : 15 = x : 2212
十、简便运算:
① 4×127 +4×29 + 57 ×4 ② 567+98 ③ 213 ×12.5×67 ×8 ④ 127 - 56 - 16
⑤ 2178 ÷7 ⑥ (13 + 15 )×45 ⑦ 0.4×7+0.4×3
(7)小学脱式计算题及答案带过程照片扩展阅读:
在四则运算中,加法和减法叫做第一级运算,乘法和除法叫做第二级运算。含有两种或两种以上的运算的算式,通常称为混合运算。加、减、乘、除的混合运算也叫做四则混合运算。在四则混合运算中,规定的计算先后次序,称为运算顺序。数学上规定的四则运算顺序如下:
(1)同级运算在一个算式中,如果只含有同级运算,应当按照从左到右的次序进行运算。这就是说,只含有加减法,或者只含有乘除法的混合运算,它们的运算顺序是从左到右依次计算。
(2)一至二级运算
在一个算式中,如果既含有第一级运算又含有第二级运算,那么,应先算第二级运算,后算第一级运算。即“先算乘法和除法,后算加法和减法”,简称“先乘除,后加减”。
⑧ 4年级脱式计算题带答案和过程
1、24.6-3.98+5.4-6.02
此题利用加法交换结合律,凑整再计算。步骤如下:
24.6-3.98+5.4-6.02
=(24.6+5.4)-(3.98+6.02)
=30-10
=20
2、27×17/26
此题先用加法分配律,把27转换成(26+1),再利用乘法结合律,使得运算简便。
27×17/26
=(26+1)×17/26
=26×17/26+1×17/26
=17+17/26
=17又17/26
3、50×49×2
此题运用乘法交换律:a×b=b×a,交换3个数的位置,先计算50×2,再跟49相乘,使得运算简便。
50×49×2
=50×2×49
=100×49
=4900
4、4.27÷26.8x3.59÷42.7x2.86÷35.9
此题先使用乘除法的交换律,交换各个数的位置,再分别运算,使得运算简便。
4.27÷26.8x3.59÷42.7x2.86÷35.9
=4.27÷42.7×2.68÷26.8×3.59÷35.9
=0.1×0.1×0.1
=0.001
5、3.5×4/5+5.5×80%+0.8
此题先把4/5和80%换算成0.8,0.8写作1×0.8,再利用乘法分配律做简便计算,方法如下:
3.5×4/5+5.5×80%+0.8
=3.5×0.8+5.5×0.8+1×0.8
=(3.5+5.5+1)×0.8
=10×0.8
=8
⑨ 100道五年级脱式计算题带答案和过程都有哪些
这个数学题100道题,你只要让他去做的时候,你记录一下时间,看他多少时间能做完。
⑩ 求100道五年级脱式计算题带答案和过程
5.4÷1.8+240×1.5=3+360=363
9000÷72×(1.25×0.7×8)=9000÷72×7=125×7=875
1.25×(8+10)=1.25×8+1.25×10=10+12.5=22.5
1.24+0.78+8.76=(1.24+8.76)+0.78=10+0.78=10.78
1/2-(4/5-1/2)=1/2+1/2-4/5=1-4/5=1/5
4800÷25÷4=4800÷(25x4)=4800÷100=4800÷100=48
2/5-(3/8-3/5)=2/5+3/5-3/8=1-3/8=5/8
3/4-(3/7-1/4)=3/4+1/4-3/7=1-3/7=4/7
3.2x0.125x2.5=0.125x8x(0.4x2.5)=1x1=1
0.4×125×25×0.8=(0.4×25)×(125×0.8)=10×100=1000
1.25×(8+10)=1.25×8+1.25×10=10+12.5=22.5
9123-(123+8.8)=9123-123-8.8=9000-8.8=8991.2
1.24×8.3+8.3×1.76=8.3×(1.24+1.76)=8.3×3=24.9
9999×1001=9999×(1000+1)=9999×1000+9999×1=10008999
14.8×6.3-6.3×6.5+8.3×3.7=(14.8-6.5)×6.3+8.3×3.7=8.3×6.3+8.3×3.7=8.3×(6.3+3.7)
=8.3×10=83
1.24+0.78+8.76=(1.24+8.76)+0.78=10+0.78=10.78
933-157-43=933-(157+43)=933-200=733
4821-998=4821-1000+2=3823
32×125×25=4×8×125×25=(4×25)×(8×125)=100×1000=100000
1.8+18÷1.5-0.5×0.3=1.8+12-0.15=13.8-0.15=13.65
6.5×8+3.5×8-47=52+28-47=80-47=33
3.7x2.56-2.3=9.472-2.3=7.172
1.24+0.78+8.76=(1.24+8.76)+0.78=10+0.78=10.78
1/2-(4/5-1/2)=1/2+1/2-4/5=1-4/5=1/5
4800÷25÷4=4800÷(25x4)=4800÷100=4800÷100=48
2/5-(3/8-3/5)=2/5+3/5-3/8=1-3/8=5/8
3/4-(3/7-1/4)=3/4+1/4-3/7=1-3/7=4/7
3.2x0.125x2.5=0.125x8x(0.4x2.5)=1x1=1
0.4×125×25×0.8=(0.4×25)×(125×0.8)=10×100=1000
1.25×(8+10)=1.25×8+1.25×10=10+12.5=22.5
9123-(123+8.8)=9123-123-8.8=9000-8.8=8991.2
1.24×8.3+8.3×1.76=8.3×(1.24+1.76)=8.3×3=24.9
61-(1.25+2.5×0.7)=61-3=58
[(10-0.8)+9.85]-2÷0.125=19.05-2÷0.125=19.05-16=3.05
408-12×24=408-288=120(46+28)×60=74x60=4440
42×50-17=2100-17=2083
32+105÷5=32+21=53
420×(327-238)=420x89=37380
(4121+2389)÷7=6510÷7=930
3.416÷(0.016×35)=3.416÷0.56=6.1
0.8×[(10-6.76)÷1.2]=0.8x(3.24÷1.2)=0.8x2.7=2.16
5.67×0.2-0.62=1.134-0.62=0.514
0.4×0.7×0.25=0.4x0.25x0.7=0.1x0.7=0.07
0.78+5.436+1=6.216+1=7.216
30.8÷[14-(9.85+1.07)]=30.8÷(14-10.92)=30.8÷3.08=10
[60-(9.5+28.9)]÷0.18=(60-38.4)÷0.18=21.6÷0.18=120
2.881÷0.43-0.24×3.5=6.7-0.24x3.5=6.7-0.84=5.86
5.38+7.85-5.37=13.23-5.37=7.86
7.2÷0.8-1.2×5=9-6=3
6-1.19×3-0.43=6-3.57-0.43=6-(3.57+0.43)=6-4=2
6.5×(4.8-1.2×4)=6.5x(4.8-4.8)=6.5x0=0
0.68×1.9+0.32×1.9=(0.68+0.32)x1.9=1x1.9=1.9
10.15-10.75×0.4-5.7=10.15-4.3-5.7=10.15-(4.3+5.7)=10.15-10=0.15
5.8×(3.87-0.13)+4.2×3.74=5.8x3.74+4.2x3.74=(5.8+4.2)x3.74=10x3.74=37.4
20×[(2.44-1.8)÷0.4+0.15]=20x(0.64÷0.4+0.15)=20x(1.6+0.15)=20x1.75=35
28-(3.4+1.25×2.4)=28-(3.4+3)=28-6.4=21.6
2.55×7.1+2.45×7.1=(2.55+2.45)x7.1=5x7.1=35.5
0.8×〔15.5-(3.21+5.79)〕=0.8x(15.5-9)=0.8x6.5=5.2
(31.8+3.2×4)÷5=(31.8+12.8)÷5=44.6÷5=8.92
31.5×4÷(6+3)=126÷9=14
2÷2.5+2.5÷2=0.8+1.25=2.05
194-64.8÷1.8×0.9=194-36x0.9=194-32.4=161.65180-705×6=5180-4230=950
24÷2.4-2.5×0.8=10-2=8
405×(3213-3189)=405x24=9720
125×(97-81)=125x16=2000
6942+480÷3=6942+160=6782
20+80÷4-20=20+20-20=40-20=20
100÷(32-30)×0=100÷2x0=50x0=0
25×4-12×5=100-60=40
70×〔(42-42)÷18〕=70x(0÷18)=70x0=0
75×65+75×35=75x(65+35)=75x100=7500
6-1.6÷4=6-0.4=5.6
32.52-(6+9.728÷3.2)×2.5=32.52-(6+3.04)x2.5=32.52-9.02x2.5=32.52-22.55=9.97
(136+64)×(65-345÷23)=200x(65-15)=200x50=10000