1、填一填
(1)分母是12的最简真分数有( )个,他们的和是( )。
(2)一根铁丝长45 米,比另一根短14 米,两根铁丝共( )米。
(3)一根铁丝长45 米,另一根比它短17 米,另一根长( )米。
(4)异分母分数相加减,要先( ),化成( ),再加减。
(5)一批化肥,第一天运走它的13 ,第二天运走它的25 ,还剩这批化肥的( )没有运。
(6)把下面的分数和小数互化。
075=( ) 25 =( ) 342=( )
58 =( ) 212=( ) 414 =( )
2、计算题
512 +34 +112 710 -38 -18 415 +56
12 -(34 -38 ) 56 -(13 +310 ) 23 +56
3、解方程
17 +x=23 45 -x=14 x-16 =38
5、解决问题
(1)有一块布料,做上衣用去78 米,做裤子用去34 米,还剩112 米,这些布料一共用去多少米?
(2)某工程队修一条路,第一周修了49 千米,第二周修了29 千米,第三周修的比前两周的总和少16 千米,第三周修了多少?
(3)课堂上学生做实验用15 小时,老师讲解用310 小时,其余的时间学生独立做作业。已知每堂课是23 小时,学生做作业用了多少时间?
求比较复杂的脱式计算 要整数、分数、小数混合的 好的给分
42×8分之4-93+7%
5+2612×1分之14-9
21/3+025×4+123%
72分之142+36分之7×24%
5×21分之7+42195+100分之42185
514-(215-812+12分之973)
440道百分数,分数,小数,整数混合的简便运算
3/7 × 49/9 - 4/3
28/9 × 15/36 + 1/27
312× 5/6 – 2/9 ×3
48× 5/4 + 1/4
56÷ 3/8 – 3/8 ÷6
64/7 × 5/9 + 3/7 × 5/9
75/2 -( 3/2 + 4/5 )
87/8 + ( 1/8 + 1/9 )
99 × 5/6 + 5/6
103/4 × 8/9 - 1/3
117 × 5/49 + 3/14
126 ×( 1/2 + 2/3 )
138 × 4/5 + 8 × 11/5
1431 × 5/6 – 5/6
159/7 - ( 2/7 – 10/21 )
165/9 × 18 – 14 × 2/7
174/5 × 25/16 + 2/3 × 3/4
1814 × 8/7 – 5/6 × 12/15
1917/32 – 3/4 × 9/24
203 × 2/9 + 1/3
215/7 × 3/25 + 3/7
223/14 ×× 2/3 + 1/6
231/5 × 2/3 + 5/6
249/22 + 1/11 ÷ 1/2
255/3 × 11/5 + 4/3
2645 × 2/3 + 1/3 × 15
277/19 + 12/19 × 5/6
281/4 + 3/4 ÷ 2/3
298/7 × 21/16 + 1/2
30101 × 1/5 – 1/5 × 21
3150+160÷40 (58+370)÷(64-45)
32120-144÷18+35
33347+45×2-4160÷52
34(58+37)÷(64-9×5)
3595÷(64-45)
36178-145÷5×6+42 420+580-64×21÷28
37812-700÷(9+31×11) (136+64)×(65-345÷23)
3885+14×(14+208÷26)
39(284+16)×(512-8208÷18)
40120-36×4÷18+35
41(58+37)÷(64-9×5)
42(68-68×055)÷85
43012× 48÷012×48
44(32×15+25)÷16 (2)32×(15+25)÷16
456-16÷4= 538+785-537=
4672÷08-12×5= 6-119×3-043=
4765×(48-12×4)= 068×19+032×19
481015-1075×04-57
4958×(387-013)+42×374
503252-(6+9728÷32)×25
51[(71-56)×09-115] ÷25
5254÷[26×(37-29)+062]
5312×6÷(12-72)-6 (4)12×6÷72-6
1125×3+125×5+25×3+25
29999×3+101×11×(101-92)
3(23/4-3/4)×(3×6+2)
43/7 × 49/9 - 4/3
58/9 × 15/36 + 1/27
612× 5/6 – 2/9 ×3
78× 5/4 + 1/4
86÷ 3/8 – 3/8 ÷6
94/7 × 5/9 + 3/7 × 5/9
105/2 -( 3/2 + 4/5 )
117/8 + ( 1/8 + 1/9 )
129 × 5/6 + 5/6
133/4 × 8/9 - 1/3
147 × 5/49 + 3/14
156 ×( 1/2 + 2/3 )
168 × 4/5 + 8 × 11/5
1731 × 5/6 – 5/6
189/7 - ( 2/7 – 10/21 )
195/9 × 18 – 14 × 2/7
204/5 × 25/16 + 2/3 × 3/4
2114 × 8/7 – 5/6 × 12/15
2217/32 – 3/4 × 9/24
233 × 2/9 + 1/3
245/7 × 3/25 + 3/7
253/14 ×× 2/3 + 1/6
261/5 × 2/3 + 5/6
279/22 + 1/11 ÷ 1/2
285/3 × 11/5 + /3
2945 × 2/3 + 1/3 × 15
307/19 + 12/19 × 5/6
311/4 + 3/4 ÷ 2/3
328/7 × 21/16 + 1/2
33101 × 1/5 – 1/5 × 21
3450+160÷40
35120-144÷18+35
36347+45×2-4160÷52
37(58+37)÷(64-9×5)
3895÷(64-45)
39178-145÷5×6+42
40812-700÷(9+31×11)
4185+14×(14+208÷26)
43120-36×4÷18+35
44(58+37)÷(64-9×5)
45(68-68×055)÷85
46012× 48÷012×48
47(32×15+25)÷16
486-16÷4= 538+785-537=
4972÷08-12×5= 6-119×3-043=
5065×(48-12×4)=
5158×(387-013)+42×374
523252-(6+9728÷32)×25
53[(71-56)×09-115] ÷25
5454÷[26×(37-29)+062]
5512×6÷(12-72)-6
5612×6÷72-6
57068×19+032×19
5858+370)÷(64-45)
59420+580-64×21÷28
60136+6×(65-345÷23)
15-1075×04-57
62181+(3-0299÷023)×1
63(68-68×055)÷85
64012× 48÷012×48
65(32×15+25)÷16
6632×6+(15+25)÷16
67068×19+032×19
681015-1075×04-57
6958×(387-013)+42×374
703252-(6+9728÷32)×25
71[(71-56)×09-115] ÷25
7254÷[26×(37-29)+062]
7312×6÷(12-72)-6
7412×6÷72-6
753302-(1484-9085)÷25
76(25%-695%-12%)36
77/43/5+3/42/5
781-1/4+8/9/7/9
79+1/6/3/24+2/21
80/153/5
813/4/9/10-1/6
82/3+1/2)/5/6-1/3]/1/7
83/5+3/5/2+3/4
84(2-2/3/1/2)]2/5
863+456-528
875%+6325
13/7 × 49/9 - 4/3
28/9 × 15/36 + 1/27
312× 5/6 – 2/9 ×3
十道复杂小学计算题(小数、分数、百分数、整数等)要求混合运算及答案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
求小数复杂混合运算和分数复杂混合运算各100道2/12=1 3/13=1 3/23=2 3/16=2
4/38=6 5/320=12 7/314=6 8/740=35
4/316=12 9/527=15 2/130=15 12/724=14
30/130=1 51/9102=18 19/976=36 4/98=18
5/890=144 99/9899=98 3/146=28 7/128=4
10/190=9 5/3105=63 19/738=14 5/125=5
8/1916=38 61/60122=120 7/228=8 6/148=8
9/718=14 25/7100=28 9/581=45 8/916=18
11/14-3/14+1/8
=405-(28+07)
=055
405-28-07
=405-(28+07)
=055
212+198
=(200+12)+(100+98)
=200+12+100+98
=12+98+100+200
=110+100+200
=410
1375-(375+648)
=1375-375-648
=10-648
=352
(075427+573-057325)/37972
=(075427+5731-573025)/37972
=[075427+573(1-025)]/37972
=[075427+573075]/37972
=[(427+573)075]/37972
=75/37972
=257972
=199300
3450628=345×28×06=5796
402+54+098
=402+098+54
=5+54
=104
517-18-32
=517-(18+32)
=517-5
=017
1375-(375+648)
=1375-375-648
=352
33145+3355
=(145+55)33
=20033
=6600
369136-36369
=100369
=36900
19351+19349
=100193
=19300
2532
=2548
=800
7916+7978+796
=(16+78+6)79
=10079
=7900
2532
=2548
=800
19351+19349
=100193
=19300
369136-36369
=100369
=36900
33145+3355
=(145+55)33
=20033
=6600
/ =除号 =乘号
1(1+1/2)(1+1/3)(1+1/4)(1+1/100)
2(1-1/2)(1-1/3)(1-1/4)(1-1/100)
38+2-8+2
4254/254
5726-(526-15)
6286+198
7314-202
8526+301
9223-99
10625+385-2125+3875
119-245621
1205/115-4275
131/2×3/5
143375+575+225+6625
151001-9036÷18
1638×525+145
172143+5721
1830×1/3
1910245-328
202/3×12
212831+176/8
223/5×5/6
23(50-125)/25
242/5×1/3
25611047+639
261/2-1/6
273527-522/18
281/7×1/5
293375097+0976625
3025×4/5
31654+24+346+06
325/6-1/2
3395618+95682
341/2×1/5
35600-420/12
36344/36-54025
3716/2+30/2+90/6
383001-1998
395000-10534
40015/025+07512
41(1/2+1/3+1/4)024
42(25+4)4
43300-4263/21
44081/025+596
45403÷13×27
4615×42-075÷025
47327×4 +327×57
48(12+ 18)×451025-768÷32
49025×80-045÷09
501025-768÷32
510252694
522348+27516
532/915/8-1/129/5
5424+24(5375-3375)
55645-4512
56015+12/024-045
57375-(235+025/125)
58761/4+2325/100+025
5910-287-713
60096+9699
6175-571/3
621237-325-675
631668+2216+16
6440119+284
65587-1665/37
66044725+(23+53)
67931-1125-7875
68640+12845
698216-0336/42
70400(062+008)
1/2+1/3
2/1-5/4
9\33\9
3/4+5/4= 4/5+6/5= 5/6+6/7=
WPS中如何进行比较复杂的数学计算说明是在 文字 还是 表格里
如何实现比较复杂的分组,小计与合计按group by rollup(stock_id,type_cd,DISCOUNT);分组,其他的业务计算你就自己写吧
具体如下:
SQL> select from t_dist;
TYPE_CD BUYER_ID ORDER_DT SO_ID STOCK_ID UNIT_PRICE DISCOUNT QTY
---------- ------------ ----------- ------------ ------------ ---------- ---------- ----------
1 CN1001 2008-4-1 S9001 29110311 50 10 8
1 CN1001 2008-4-2 S9002 29110312 60 20 2
1 CN1001 2008-4-3 S9003 29110313 70 15 3
2 CN1001 2008-4-4 S9004 29110312 60 15 5
2 CN1001 2008-4-5 S9005 29110311 70 10 6
3 CN1001 2008-4-6 S9006 29110313 55 20 4
3 CN1001 2008-4-6 S9007 29110311 40 10 3
3 CN1001 2008-4-7 S9008 29110312 50 50 5
3 CN1001 2008-4-7 S9009 29110313 80 10 2
1 CN1001 2008-4-8 S9010 29110311 65 10 1
10 rows selected
SQL>
SQL> select decode(rn, 1, '小计', STOCK_ID) STOCK_ID,
2 TYPE_CD,
3 DISCOUNT,
4 AVG_PRICE,
5 SUM_TOT,
6 round(nvl(RATIO_TO_REPORT(decode(rn, 0, SUM_TOT, null)) over(partition by STOCK_ID), 1) 100, 2) || '%' PCT
7 from
8 (select STOCK_ID,
9 TYPE_CD,
10 DISCOUNT,
11 round(avg(UNIT_PRICE), 2) AVG_PRICE,
12 sum(QTY UNIT_PRICE) SUM_TOT,
13 grouping(TYPE_CD) rn
14 from t_dist
15 group by grouping sets((STOCK_ID), (STOCK_ID, TYPE_CD, DISCOUNT)));
STOCK_ID TYPE_CD DISCOUNT AVG_PRICE SUM_TOT PCT
------------ ---------- ---------- ---------- ---------- -----------------------------------------
29110311 1 10 575 465 4627%
29110311 2 10 70 420 4179%
29110311 3 10 40 120 1194%
小计 5625 1005 100%
29110312 1 20 60 120 1791%
29110312 2 15 60 300 4478%
29110312 3 50 50 250 3731%
小计 5667 670 100%
29110313 1 15 70 210 3559%
29110313 3 10 80 160 2712%
29110313 3 20 55 220 3729%
小计 6833 590 100%
12 rows selected
SQL>
分数,小数乘除混合运算一般先( )后计算。分数,小数加减混合运算一般采用( )计算比较简便。分数、小数乘除混合运算一般先(把小数化成分数)再计算 分数和小数的加减混合运算,一般是采用(把分数化成小数)计算比较简便
五年级分数,小数,整数脱式计算11253+1255+253+25
299993+10111(101-92)
3(23/4-3/4)(36+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
较复杂的分数应用题一张**票原价15元。
解题过程如下:
设:**票原价x元,降价前观众y人。
15y(x-3)=12xy
两边同时除以y,得
15x-45=12x
03x=45
x=15
分数小数整数混合运算180道,求速度• (1) 4×1÷1 =
• (2) 17-9-2 =
• (3) 4÷2-1 =
• (4) 11×1×4 =
• (5) 10+69×2 =
• (6) 5÷1×8 =
• (7) 39×8-51 =
• (8) 3×3×1 =
• (9) 38×125×8×3=
• (10) 54×9-387 =
• (11) 24-9+97 =
• (12) 54×5-178 =
• (13) 4÷1×6 =
• (14) 14+26-34 =
• (15) 23×8+93 =
• (16) 6÷1+39 =
• (17) 90+56+65 =
• (18) 13+59+96 =
• (19) 36×8-192 =
• (20) 3÷1-1 =
• 35×2×5=35×(2×___)
• (60×25) ×4=60×(___×4)
• (125×5) ×8=(___×___)×5
• (3×4) ×5×6=(__×__)×(__×__)。
• 25×17×4
• (1) 4×1÷1 =
• (2) 17-9-2 =
• (3) 4÷2-1 =
• (4) 11×1×4 =
• (5) 10+69×2 =
• (6) 5÷1×8 =
• (7) 39×8-51 =
• (8) 3×3×1 =
• (9) 38×125×8×3=
• (10) 54×9-387 =
• (11) 24-9+97 =
• (12) 54×5-178 =
• (13) 4÷1×6 =
• (14) 14+26-34 =
• (15) 23×8+93 =
• (16) 6÷1+39 =
• (17) 90+56+65 =
• (18) 13+59+96 =
• (19) 36×8-192 =
• (20) 3÷1-1 =
• 35×2×5=35×(2×___)
• (60×25) ×4=60×(___×4)
• (125×5) ×8=(___×___)×5
• (3×4) ×5×6=(__×__)×(__×__)。
• 25×17×4 =
26×2= 180÷9= 180×11= 3000÷5=
24+08= 60-16= 112-10= 14+17=
59-24= 36+13= 80×5÷2= 30-30÷5=
2.递等式计算,怎样简便就怎样算。(18分)
367+07-138 (135-87) ÷(22-9) 73+34+27+56
72×125 725-342-158 99×38+38
26×2= 180÷9= 180×11= 3000÷5=
24+08= 60-16= 112-10= 14+17=
59-24= 36+13= 80×5÷2= 30-30÷5=
2.递等式计算,怎样简便就怎样算。(18分)
367+07-167 (135-87) ÷(22-9) 73+34+27+56
72×125 725-342-158 99×38+38
1、128×25+41×128+34×128
2、125×25×04×8
3、
345×15= 156×12= 135×003= 825×14=
135×12= 112×15= 114×003= 213×14=
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