计算题!计算题!计算题!计算题!求计算题,简便计算题,分数的小数的都可以
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计算题!计算题!计算题!计算题!求计算题,简便计算题,分数的小数的都可以
计算题!计算题!计算题!计算题!
求计算题,简便计算题,分数的小数的都可以
计算题!计算题!计算题!计算题!求计算题,简便计算题,分数的小数的都可以
求未知数X.
2/8=9/x 1/2:1/5=1/4:x
2X=72 1/2X=1/5*1/4
X=72/2 1/2X=1/20
X=36 X=1/10
40:χ=2.5:15 1/2:x=4:16
解2.5X=600 X=240解:4X=8 X=2
用递等式计算.
(1) 0.625×(8.3-2.5×0.12) (2)3÷3/7-3/7÷3
原式=0.625*(8.3-0.3) 原式=3*7/3-3/7*1/3
=5 =7-1/7
=8/7
怎样简便怎样算.
(1)3098+3098×99 (2)6.3×8.7+8.7×3.7
=3098*(99+1) =(6.3+3.7)*8.7
=3098*100 =10*8.7
=309800 =87
计算题呢,在那里
1.125*3+125*5+25*3+25 2.9999*3+101*11*(101-92) 3.(23/4-3/4)*(3*6+2) 4. 3/7 × 49/9 - 4/3 5. 8/9 × 15/36 + 1/27 6. 12× 5/6 – 2/9 ×3 7. 8× 5/4 + 1/4 8. 6÷ 3/8 – 3/8 ÷6 9. 4/7 × 5/9 + 3/7 × 5/9 1...
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1.125*3+125*5+25*3+25 2.9999*3+101*11*(101-92) 3.(23/4-3/4)*(3*6+2) 4. 3/7 × 49/9 - 4/3 5. 8/9 × 15/36 + 1/27 6. 12× 5/6 – 2/9 ×3 7. 8× 5/4 + 1/4 8. 6÷ 3/8 – 3/8 ÷6 9. 4/7 × 5/9 + 3/7 × 5/9 10. 5/2 -( 3/2 + 4/5 ) 11. 7/8 + ( 1/8 + 1/9 ) 12. 9 × 5/6 + 5/6 13. 3/4 × 8/9 - 1/3 14. 7 × 5/49 + 3/14 15. 6 ×( 1/2 + 2/3 ) 16. 8 × 4/5 + 8 × 11/5 17. 31 × 5/6 – 5/6
18. 9/7 - ( 2/7 – 10/21 ) 19. 5/9 × 18 – 14 × 2/7 20. 4/5 × 25/16 + 2/3 × 3/4 21. 14 × 8/7 – 5/6 × 12/15 22. 17/32 – 3/4 × 9/24 23. 3 × 2/9 + 1/3 24. 5/7 × 3/25 + 3/7 25. 3/14 ×× 2/3 + 1/6 26. 1/5 × 2/3 + 5/6 27. 9/22 + 1/11 ÷ 1/2 28. 5/3 × 11/5 + 4/3 29. 45 × 2/3 + 1/3 × 15 30. 7/19 + 12/19 × 5/6 31. 1/4 + 3/4 ÷ 2/3 32. 8/7 × 21/16 + 1/2 33. 101 × 1/5 – 1/5 × 21 34.50+160÷40 35.120-144÷18+35 36.347+45×2-4160÷52 37(58+37)÷(64-9×5) 38.95÷(64-45) 39.178-145÷5×6+42 40.812-700÷(9+31×11) 41.85+14×(14+208÷26) 42. 21.63-(8.5+9.63) 43.120-36×4÷18+35
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什么种类的?方程?计算?
208*125=(200+8)*125=200*125+125*8=25000+1000=26000
什么题目?是要题目吗?数学书上有
100+1=101
这行吗......
又简便算法20.07*1994-19.93*2007=20.07
你 要问什么呀
1.125*3+125*5+25*3+25 2.9999*3+101*11*(101-92) 3.(23/4-3/4)*(3*6+2) 4. 3/7 × 49/9 - 4/3 5. 8/9 × 15/36 + 1/27 6. 12× 5/6 – 2/9 ×3 7. 8× 5/4 + 1/4 8. 6÷ 3/8 – 3/8 ÷6 9. 4/7 × 5/9 + 3/7 × 5/9 1...
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1.125*3+125*5+25*3+25 2.9999*3+101*11*(101-92) 3.(23/4-3/4)*(3*6+2) 4. 3/7 × 49/9 - 4/3 5. 8/9 × 15/36 + 1/27 6. 12× 5/6 – 2/9 ×3 7. 8× 5/4 + 1/4 8. 6÷ 3/8 – 3/8 ÷6 9. 4/7 × 5/9 + 3/7 × 5/9 10. 5/2 -( 3/2 + 4/5 ) 11. 7/8 + ( 1/8 + 1/9 ) 12. 9 × 5/6 + 5/6 13. 3/4 × 8/9 - 1/3 14. 7 × 5/49 + 3/14 15. 6 ×( 1/2 + 2/3 ) 16. 8 × 4/5 + 8 × 11/5 17. 31 × 5/6 – 5/6
18. 9/7 - ( 2/7 – 10/21 ) 19. 5/9 × 18 – 14 × 2/7 20. 4/5 × 25/16 + 2/3 × 3/4 21. 14 × 8/7 – 5/6 × 12/15 22. 17/32 – 3/4 × 9/24 23. 3 × 2/9 + 1/3 24. 5/7 × 3/25 + 3/7 25. 3/14 ×× 2/3 + 1/6 26. 1/5 × 2/3 + 5/6 27. 9/22 + 1/11 ÷ 1/2 28. 5/3 × 11/5 + 4/3 29. 45 × 2/3 + 1/3 × 15 30. 7/19 + 12/19 × 5/6 31. 1/4 + 3/4 ÷ 2/3 32. 8/7 × 21/16 + 1/2 33. 101 × 1/5 – 1/5 × 21 34.50+160÷40 35.120-144÷18+35 36.347+45×2-4160÷52 37(58+37)÷(64-9×5) 38.95÷(64-45) 39.178-145÷5×6+42 40.812-700÷(9+31×11) 41.85+14×(14+208÷26) 42. 21.63-(8.5+9.63) 43.120-36×4÷18+35
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5.2X0.362=1.08824
25413.3x1523.25=2.635
35.2x45.x2.62=352
2516.25x52.3654=40.36
635.2x63.=52.02
52.16x253.2=5.362
2.36x3569.=3.02
52.3x5.=53.20
2.35x36.2=2013.6
52....
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5.2X0.362=1.08824
25413.3x1523.25=2.635
35.2x45.x2.62=352
2516.25x52.3654=40.36
635.2x63.=52.02
52.16x253.2=5.362
2.36x3569.=3.02
52.3x5.=53.20
2.35x36.2=2013.6
52.3x64.3=52.36
25.36x42.36=52.36
251.3x25.3=225.3
20.3x42.3=127
32.6x1.35=23.52
2.35x.36.5=36.5
3.65x.36.2=5.36
36.2x2.36=3.26
56.2x13.2=5.375
2.36x75.3=26.3
254.3x62.3=519.3
5136.2x.632.2=52.36
21.5x362.=253.3
35.36x3.62=4.36
2.39x365.9=26.36
5798.6x32.46=4350.6
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