给我几道数学题,不要答案,我练练(急!急!急!!!)
现在的数学越来越难学了,我们老师说了,多做点题会对数学有很大的帮助的。现在,我就向各大网友求助点数学题!!急!!急!!急!!...
现在的数学越来越难学了,我们老师说了,多做点题会对数学有很大的帮助的。现在,我就向各大网友求助点数学题!!急!!急!!急!!
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希望我的回答你能满意
1.小菲参加一次英语竞赛,一共20题,规定做对一题得5分,做错一题不但不得分,还要倒扣2分,结果她得了79分.你知道她做错了几题吗?
2.苏州市出租车起步价是10元3千米,以后每小时行1千米付1.8元,媛媛和爸爸从家到外婆家共付车费13.6元.媛媛家到外婆家大约有多少千米?(列方程解答)
3.有甲,乙两堆棋子,甲堆的棋子数是乙堆的一半,如果从乙堆里取出9颗放入甲堆,这样两堆棋子的颗数就相同了。求原来早堆有多少颗棋子?
哪位能帮忙,请回答详细些,最好把简单思路说一下,万分感谢。在线等。
问题补充:因为是小学六年级的数学题,刚学方程式,请简单些。
有一排电线杆,原来每两根之间相距 米,现在要改成每两根之间相距 米,如果第一跟不动,那么至少在隔()米可以有一根不移动,这根是原来的第()根,是现在的第()根。
小名做了20道数学题,做对一道题得5分,做错一道题扣3分,结果小名得了60分,小名做对几道题?
道数学题,全班40人做对,10人做错,这道题的正确率是( )%
1.45+15×6=
2.250÷5×8=
3.6×5÷2×4=
4.30×3+8=
5.400÷4+20×5=
6.10+12÷3+20=
7.(80÷20+80)÷4=
8.70+(100-10×5)=
9.360÷40=
10.40×20=
11.80-25=
12.70+45=
13.90×2=
14.16×6=
15.300×6=
16.540÷9=
17.30×20=
18.400÷4=
19.350-80=
20.160+70=
21.18-64÷8=
22.42÷6+20=
23.40-5×7=
24.80+60÷3=
25.41+18÷2=
26.75-11×5=
27.42+7-29=
28.5600÷80=
29.25×16=
30.120×25=
31.36×11=
32.1025÷25=
33.336+70=
34.25×9×4=
35.200-33×3=
36.3020-1010=
37.12×50=
38.25×8=
39.23×11=
40.125÷25=
41.4200-2200=
42.220+80=
43.20×8×5=
44.600-3×200=
45.20+20÷2=
46.35-25÷5=
47.36+8-40=
48.2800÷40=
49.98÷14 =
50.96÷24 =
51.56÷14 =
52.65÷13 =
53.75÷15 =
54.120÷24 =
55.200÷25 =
56.800÷16 =
57.840÷21 =
58.560÷14 =
59.390÷13 =
60.600÷15 =
61.72÷24 =
62.85÷17 =
63.90÷15 =
64.96÷16 =
65.78÷26 =
66.51÷17 =
67.80÷40 =
68.100÷20 =
69.100÷4 =
70.240÷40 =
71.920÷4 =
72.300÷60=
73.64÷2 =
74.64÷4 =
75.50÷5 =
76.60÷8 =
77.96÷4 =
78.90÷6 =
79.400+80 =
80.400-80 =
81.40×80 =
82.400÷80 =
83.48÷16 =
84.96÷24 =
85.160×5=
86.4×250=
87.0×518=
88.10×76=
89.36×10=
90.15×6=
91.24×3=
92.5×18=
93.26×4=
94.7×15=
95.32×30=
96.40×15=
97.60×12=
98.23×30=
99.30×50=
100.5×700=
1.小菲参加一次英语竞赛,一共20题,规定做对一题得5分,做错一题不但不得分,还要倒扣2分,结果她得了79分.你知道她做错了几题吗?
2.苏州市出租车起步价是10元3千米,以后每小时行1千米付1.8元,媛媛和爸爸从家到外婆家共付车费13.6元.媛媛家到外婆家大约有多少千米?(列方程解答)
3.有甲,乙两堆棋子,甲堆的棋子数是乙堆的一半,如果从乙堆里取出9颗放入甲堆,这样两堆棋子的颗数就相同了。求原来早堆有多少颗棋子?
哪位能帮忙,请回答详细些,最好把简单思路说一下,万分感谢。在线等。
问题补充:因为是小学六年级的数学题,刚学方程式,请简单些。
有一排电线杆,原来每两根之间相距 米,现在要改成每两根之间相距 米,如果第一跟不动,那么至少在隔()米可以有一根不移动,这根是原来的第()根,是现在的第()根。
小名做了20道数学题,做对一道题得5分,做错一道题扣3分,结果小名得了60分,小名做对几道题?
道数学题,全班40人做对,10人做错,这道题的正确率是( )%
1.45+15×6=
2.250÷5×8=
3.6×5÷2×4=
4.30×3+8=
5.400÷4+20×5=
6.10+12÷3+20=
7.(80÷20+80)÷4=
8.70+(100-10×5)=
9.360÷40=
10.40×20=
11.80-25=
12.70+45=
13.90×2=
14.16×6=
15.300×6=
16.540÷9=
17.30×20=
18.400÷4=
19.350-80=
20.160+70=
21.18-64÷8=
22.42÷6+20=
23.40-5×7=
24.80+60÷3=
25.41+18÷2=
26.75-11×5=
27.42+7-29=
28.5600÷80=
29.25×16=
30.120×25=
31.36×11=
32.1025÷25=
33.336+70=
34.25×9×4=
35.200-33×3=
36.3020-1010=
37.12×50=
38.25×8=
39.23×11=
40.125÷25=
41.4200-2200=
42.220+80=
43.20×8×5=
44.600-3×200=
45.20+20÷2=
46.35-25÷5=
47.36+8-40=
48.2800÷40=
49.98÷14 =
50.96÷24 =
51.56÷14 =
52.65÷13 =
53.75÷15 =
54.120÷24 =
55.200÷25 =
56.800÷16 =
57.840÷21 =
58.560÷14 =
59.390÷13 =
60.600÷15 =
61.72÷24 =
62.85÷17 =
63.90÷15 =
64.96÷16 =
65.78÷26 =
66.51÷17 =
67.80÷40 =
68.100÷20 =
69.100÷4 =
70.240÷40 =
71.920÷4 =
72.300÷60=
73.64÷2 =
74.64÷4 =
75.50÷5 =
76.60÷8 =
77.96÷4 =
78.90÷6 =
79.400+80 =
80.400-80 =
81.40×80 =
82.400÷80 =
83.48÷16 =
84.96÷24 =
85.160×5=
86.4×250=
87.0×518=
88.10×76=
89.36×10=
90.15×6=
91.24×3=
92.5×18=
93.26×4=
94.7×15=
95.32×30=
96.40×15=
97.60×12=
98.23×30=
99.30×50=
100.5×700=
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1.45+15×6=
2.250÷5×8=
3.6×5÷2×4=
4.30×3+8=
5.400÷4+20×5=
6.10+12÷3+20=
7.(80÷20+80)÷4=
8.70+(100-10×5)=
9.360÷40=
10.40×20=
11.80-25=
12.70+45=
13.90×2=
14.16×6=
15.300×6=
16.540÷9=
17.30×20=
18.400÷4=
19.350-80=
20.160+70=
21.18-64÷8=
22.42÷6+20=
23.40-5×7=
24.80+60÷3=
25.41+18÷2=
26.75-11×5=
27.42+7-29=
28.5600÷80=
29.25×16=
30.120×25=
31.36×11=
32.1025÷25=
33.336+70=
34.25×9×4=
35.200-33×3=
36.3020-1010=
37.12×50=
38.25×8=
39.23×11=
40.125÷25=
41.4200-2200=
42.220+80=
43.20×8×5=
44.600-3×200=
45.20+20÷2=
46.35-25÷5=
47.36+8-40=
48.2800÷40=
49.98÷14 =
50.96÷24 =
51.56÷14 =
52.65÷13 =
53.75÷15 =
54.120÷24 =
55.200÷25 =
56.800÷16 =
57.840÷21 =
58.560÷14 =
59.390÷13 =
60.600÷15 =
61.72÷24 =
62.85÷17 =
63.90÷15 =
64.96÷16 =
65.78÷26 =
66.51÷17 =
67.80÷40 =
68.100÷20 =
69.100÷4 =
70.240÷40 =
71.920÷4 =
72.300÷60=
73.64÷2 =
74.64÷4 =
75.50÷5 =
76.60÷8 =
77.96÷4 =
78.90÷6 =
79.400+80 =
80.400-80 =
81.40×80 =
82.400÷80 =
83.48÷16 =
84.96÷24 =
85.160×5=
86.4×250=
87.0×518=
88.10×76=
89.36×10=
90.15×6=
91.24×3=
92.5×18=
93.26×4=
94.7×15=
95.32×30=
96.40×15=
97.60×12=
98.23×30=
99.30×50=
100.5×700=
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
31.50+160÷40 (58+370)÷(64-45)
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+42 420+580-64×21÷28
37.812-700÷(9+31×11) (136+64)×(65-345÷23)
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 (2)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= 6-1.19×3-0.43=
47.6.5×(4.8-1.2×4)= 0.68×1.9+0.32×1.9
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
51.[(7.1-5.6)×0.9-1.15] ÷2.5
52.5.4÷[2.6×(3.7-2.9)+0.62]
53.12×6÷(12-7.2)-6 (4)12×6÷7.2-6
2.250÷5×8=
3.6×5÷2×4=
4.30×3+8=
5.400÷4+20×5=
6.10+12÷3+20=
7.(80÷20+80)÷4=
8.70+(100-10×5)=
9.360÷40=
10.40×20=
11.80-25=
12.70+45=
13.90×2=
14.16×6=
15.300×6=
16.540÷9=
17.30×20=
18.400÷4=
19.350-80=
20.160+70=
21.18-64÷8=
22.42÷6+20=
23.40-5×7=
24.80+60÷3=
25.41+18÷2=
26.75-11×5=
27.42+7-29=
28.5600÷80=
29.25×16=
30.120×25=
31.36×11=
32.1025÷25=
33.336+70=
34.25×9×4=
35.200-33×3=
36.3020-1010=
37.12×50=
38.25×8=
39.23×11=
40.125÷25=
41.4200-2200=
42.220+80=
43.20×8×5=
44.600-3×200=
45.20+20÷2=
46.35-25÷5=
47.36+8-40=
48.2800÷40=
49.98÷14 =
50.96÷24 =
51.56÷14 =
52.65÷13 =
53.75÷15 =
54.120÷24 =
55.200÷25 =
56.800÷16 =
57.840÷21 =
58.560÷14 =
59.390÷13 =
60.600÷15 =
61.72÷24 =
62.85÷17 =
63.90÷15 =
64.96÷16 =
65.78÷26 =
66.51÷17 =
67.80÷40 =
68.100÷20 =
69.100÷4 =
70.240÷40 =
71.920÷4 =
72.300÷60=
73.64÷2 =
74.64÷4 =
75.50÷5 =
76.60÷8 =
77.96÷4 =
78.90÷6 =
79.400+80 =
80.400-80 =
81.40×80 =
82.400÷80 =
83.48÷16 =
84.96÷24 =
85.160×5=
86.4×250=
87.0×518=
88.10×76=
89.36×10=
90.15×6=
91.24×3=
92.5×18=
93.26×4=
94.7×15=
95.32×30=
96.40×15=
97.60×12=
98.23×30=
99.30×50=
100.5×700=
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
31.50+160÷40 (58+370)÷(64-45)
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+42 420+580-64×21÷28
37.812-700÷(9+31×11) (136+64)×(65-345÷23)
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 (2)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= 6-1.19×3-0.43=
47.6.5×(4.8-1.2×4)= 0.68×1.9+0.32×1.9
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
51.[(7.1-5.6)×0.9-1.15] ÷2.5
52.5.4÷[2.6×(3.7-2.9)+0.62]
53.12×6÷(12-7.2)-6 (4)12×6÷7.2-6
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你就在百度知道里回答同龄学生的问题吧……又练习,还可以赚积分
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你应该先说明一下你现在的状况,是什么阶段的题目。可以多看点参考书之类的。
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(1+1/2)*(1+1/3)*(1+1/4)*^^^^^^*(1+1/18)*(1+1/19)*(1+1/20) 简算
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1/(2+3)+1/(3+4)+1/(4+5)+…+1/(99+100)=?
注“/”表示分数线.
注“/”表示分数线.
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