50简便计算(有答案)
50简便计算(有答案)
1. 3÷7x49÷9-4÷3
2. 8÷9x15÷36+1÷27
3. 12× 5÷6-2÷9 ×3
4. 8× 5÷4+1÷4
5. 6÷ 3÷8-3÷8 ÷6
6. 4÷7x5÷9+3÷7x5÷9
7. 5÷2 -( 3÷2+4÷5 )
8. 7÷8+( 1÷8+1÷9 )
9. 9x5÷6+5÷6
10. 3÷4x8÷9-1÷3
11. 7x5÷49+3÷14
12. 6 ×( 1÷2+2÷3 )
13. 8x4÷5+8x11÷5
14. 31x5÷6-5÷6
15. 9÷7-( 2÷7-10÷21 )
16. 5÷9x18-14x2÷7
17. 4÷5x25÷16+2÷3x3÷4
18. 14x8÷7-5÷6x12÷15
19. 17÷32-3÷4x9÷24
20. 3x2÷9+1÷3
21. 5÷7x3÷25+3÷7
22. 3÷14 × 2÷3+1÷6
23. 1÷5x2÷3+5÷6
24. 9÷22+1÷11 ÷ 1÷2
25. 5÷3x11÷5+4÷3
26. 45x2÷3+1÷3x15
27. 7÷19+12÷19x5÷6
28. 1÷4+3÷4 ÷ 2÷3
29. 8÷7x21÷16+1÷2
30. 101x1÷5-1÷5x21
31. 50+160÷40
32. 120-144÷18+35
33. 347+45×2-4160÷52
34 (58+37)÷(64-9×5)
35. 95÷(64-45)
36. 178-145÷5×6+42
37. 812-700÷(9+31×11)
38. 85+14×(14+208÷26)
39.(284+16)×(512-8208÷18)
40. 120-36×4÷18+35
41.(58+37)÷(64-9×5)
42. (6.8-6.8×0.55)÷8.5
43. 0.12× 4.8÷0.12×4.8
44.(3.2×1.5+2.5)÷1.6
45. 6-1.6÷4 5.38+7.85-5.37
46. 7.2÷0.8-1.2×5
47. 6.5×(4.8-1.2×4)
48. 10.15-10.75×0.4-5.7
49. 5.8×(3.87-0.13)+4.2×3.74
50. 32.52-(6+9.728÷3.2)×2.5
备用*
30.8÷[14-(9.85+1.07)]
[60-(9.5+28.9)]÷0.18
2.881÷0.43-0.24×3.5
20×[(2.44-1.8)÷0.4+0.15]
28-(3.4+1.25×2.4)
2.55×7.1+2.45×7.1
777×9+1111×3
0.8×〔15.5-(3.21+5.79)〕
(31.8+3.2×4)÷5
31.5×4÷(6+3)
0.64×25×7.8+2.2
2÷2.5+2.5÷2
194-64.8÷1.8×0.9
36.72÷4.25×9.9
5180-705×6
24÷2.4-2.5×0.8
(4121+2389)÷7
671×15-974
469×12+1492
405×(3213-3189)
3.416÷(0.016×35)
0.8×[(10-6.76)÷1.2]
19.4×6.1×2.3
5.67×0.2-0.62
18.1×0.92+3.93
0.0430.24+0.875
0.4×0.7×0.25
0.75×102 100-56.23
0.78+5.436+1
4.07×0.86+9.12.5
1. 3/7 × 49/9 - 4/3
2. 8/9 × 15/36 + 1/27
3. 12× 5/6 – 2/9 ×3
4. 8× 5/4 + 1/4
5. 6÷ 3/8 – 3/8 ÷6
6. 4/7 × 5/9 + 3/7 × 5/9
7. 5/2 -( 3/2 + 4/5 )
8. 7/8 + ( 1/8 + 1/9 )
9. 9 × 5/6 + 5/6
10. 3/4 × 8/9 - 1/3
11. 7 × 5/49 + 3/14
12. 6 ×( 1/2 + 2/3 )
13. 8 × 4/5 + 8 × 11/5
14. 31 × 5/6 – 5/6
15. 9/7 - ( 2/7 – 10/21 )
16. 5/9 × 18 – 14 × 2/7
17. 4/5 × 25/16 + 2/3 × 3/4
18. 14 × 8/7 – 5/6 × 12/15
19. 17/32 – 3/4 × 9/24
20. 3 × 2/9 + 1/3
21. 5/7 × 3/25 + 3/7
22. 3/14 ×× 2/3 + 1/6
23. 1/5 × 2/3 + 5/6
24. 9/22 + 1/11 ÷ 1/2
25. 5/3 × 11/5 + 4/3
26. 45 × 2/3 + 1/3 × 15
27. 7/19 + 12/19 × 5/6
28. 1/4 + 3/4 ÷ 2/3
29. 8/7 × 21/16 + 1/2
30. 101 × 1/5 – 1/5 × 21
没答案 算了用计算器检查就行
求小数简便计算要有答案
.96+4.8+3.1 0.456+6.22+3.78 15.89+(6.75-5.89)4.02+5.4+0.98 5.17-1.8-3.2 13.75-(3.75+6.48)
375+219+381+225
5001-247-1021-232
(181+2564)+2719
378+44+114+242+222
276+228+353+219
(375+1034)+(966+125)
(2130+783+270)+1017
99+999+9999+99999
7755-(2187+755)
2214+638+286
3065-738-1065
899+344
2357-183-317-357
2365-1086-214
497-299
2370+1995
3999+498
1883-398
12×25
75×24
138×25×4
(13×125)×(3×8)
(12+24+80)×50
704×25
25×32×125
32×(25+125)
88×125
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
四年级简便计算,要有答案
...题呢....
简便计算及答案
300÷125÷8
=300÷(125×8)
=300÷1000
=0.3
396-96-172-28
=(396-96)-(172+28)
= 300-200
= 100
125*24
= 125*8*3
= 1000*3
= 3000
26*15
= (20+6)*15
= 20*15 + 6*15
= 300+90
=390
25*99*4
= 25*4*99
= 100*99
= 9900
250*32
= 250*4*8
= 1000*8
= 8000
(98+98+98+98)*25
= 4*98*25
= 4*25*98
= 100*98
= 9800
4600÷25简便计算答案
4600÷25
=4600÷100×4
=46×4
=184
简便计算和答案
1、出示例2.45与39的和,除以45与39的差,商是多少?
集体讨论:
(1)这道题最后求什么?用什么方法计算?用关系式怎样表示?
(求商.用除法计算,被除数÷除数)
(2)能直接算出来吗?必须先算什么?
(不能直接算出来,必须先算出被除数、除数.)
(3)题中被除数、除数是怎样表示的?
(题中被除数是45与39的和,除数是45与39的差.)
(4)那么必须先算出什么?后算什么?
(必须先算被除数是45+39=84,除数是45-39=6,后算商,84÷6=14.)
(5)怎样列成综合算式?把谁写在前面、后面?为什么?
(因为要求的是商,所以被除数45+39写在前面,除数45-39写在后面.)
45十39÷45-39
(6)怎样表示要先算出45+39和45-39?(必须要加上小括号.)
(45+39)+(45—39)
=84÷6
=14
2、引申、变化.
把例2改成:45与39的和乘以45与39的差,积是多少?
教师提问:这道题求什么?应该先算什么?后算什么?怎样列综合算式?
(45+39)×(45-39)
=84×6
=504
三、巩固反馈.
1、口答列出综合算式.
(1)35与25的和,除以它们的差,商是多少?
(2)25与4的积,减去75除以5的商,差是多少?
简便计算30道及答案
- 解析:
99×28+28
=(99+1)×28
=100×28
=2800
0.45×125×32
=(0.45×4)×(125×8)
=1.8×1000
=1800
5.5乘98简便计算答案
5.5×98
=5.5×(100-2)
=5.5×100-5.5×2
=550-11
=539
简便计算175 25×17答案
175+25x17
=25x7+25x17
=25x(7+17)
=25x24
=25x20+25x4
=500+100
=600
简便计算100道及答案
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
I32×125×25
=4×8×125×25
=(4×25)×(8×125)
=100×1000
=100000
9048÷268
=(2600+2600+2600+1248)÷26
=2600÷26+2600÷26+2600÷26+1248÷269
=100+100+100+48
=348
2881÷ 43
=(1290+1591)÷ 434
=1290÷43+1591÷43
=30+37
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)