1、0.2008+2.008+20.08+200.8+2008
=0.2008×( 1+ 10+ 100+ 1000+ 10000)
=0.2008× 1 1 1 10
=2230.888
2、 1÷(2÷3)÷(3÷4)÷(4÷5)÷(5÷6)÷……÷(2007÷2008)= 1×3/2×4/3×5/4×6/5×……×2008/2007
=2008
3、 1+ 1/3+ 1/6+ 1/ 10+……+ 1/2009× 1004
=2×( 1/2+ 1/6+ 1/ 12+ 1/20+……+ 1/2008×2009)
=2×( 1- 1/2+ 1/2- 1/3+ 1/3- 1/4+……+ 1/2008- 1/2009)
=2×( 1- 1/2009)
=2×2008/2009
=40 16/2009
What is the single digit of the product of 2006 times 2006 times 2007 times 2007 times 2008?
The single digit in 2006 was 6.
The single digit in 2007 was 3.
The single digit in 2008 was 6.
6×3×6= 108
So the single digit of the product of 2006 times 2006 times 2007 times 2007 times 2008 is 8.
5、325.24+425.24+625.24+925.24+525.24
=(300+400+600+900+500)+25.24×5
=2700+ 126.2
=2826.2
6、 1/ 1×4+ 1/4×7+ 1/7× 10+ 1/ 10× 13+……+ 1/2005×2008
=( 1- 1/4+ 1/4- 1/7+ 1/7- 1/ 10+ 1/ 10- 1/ 13+……+ 1/2005- 1/2008)÷3
=( 1- 1/2008)÷3
=2007/2008÷3
=669/2008
Find the mixed operation of multiplication and division of three fractions in grade five. This is the sixth grade, and there are only addition and subtraction in the fifth grade.
1. Xiaoming's family used 15 tons of water this month, saving 3 tons than planned. How much money was saved?
2. A melon farmer transported 40 watermelons to the market and sold 25 in one morning. How much did he sell? How much is left? How much more than the rest? How much less is left than sold?
3. A bag of rice is 100 kg. On the first day, I ate a whole bag of rice. The next day, I ate the first day. How many Jin did you eat the next day?
Xiaohong weighs 45 kilograms, and Xiaoli weighs Xiaohong. Xiaohua's weight is Xiaoli. What is the weight of Xiaohua?
5. A rectangular billboard is12m long and12m wide. If one side of the advertisement is painted with red paint, it needs 0.4 kg per square meter. * * * How many kilograms do you need?
6. In the handicraft class, one group of students made 80 paper flowers, while the second group made more paper flowers than the first group. How many paper flowers did the two groups make?
7. Xiaoming has 2 1 this extra-curricular book. Xiao Qiang is younger than Xiaoming. How many books do they have?
8. The original price of a commodity in 48 yuan is now 30% off. How much is the price reduction?
9.48 yuan, the original price of a commodity, the price is increased first, and the price is reduced because of unsalable sales. What's the current price?
10, Xiao Wang saved 4200 yuan last year, which increased in the first half and the second half of this year. How much does Xiao Wang have now?
1 1, a book of 192 pages, I finished it on the first day, and the rest on the second day. How many pages are left?
12, Xiaoying has 128 pictures. Give all of them to A first, the rest to B, the rest to C. How many pictures does Xiaoying have left?
13. Forty-eight sixth-grade students from a school participated in after-school groups, including basketball team, volleyball team and chess activities. What is the number of students who take part in chess activities?
14, someone went from a to b, completed the journey on the first day, and then completed the journey every day, asking when to complete the journey that day.
15. A pair of trousers, 90 yuan, is a coat. Do you want to know the price of this coat?
16. Repair a section of road. I repaired 80 meters on the first day, but there is still work to be done. How long is this paragraph?
17, a copper wire, used, and rice leftover, for the whole length?
18. There are 4 hectares of orchards in Zhang Cun. Apple trees occupy the orchard area, while pear trees occupy it. How many hectares of pear trees are there?
19. In a math contest, three students won the first prize, accounting for the number of second prizes, and the number of second prizes accounted for the number of third prizes. Find the total number of winners.
20. Party A, Party B and Party C type a manuscript. Party A has finished it all, Party B has finished it all, and Party C has finished the remaining 45 pages. How many pages do you want in this manuscript?
2 1, Party A, Party B and Party C type a manuscript, Party A completes it all, Party B completes it all, and two people * * * complete it130th page. How many pages are there in this manuscript?
22. Students work in groups. There are 30 people in Group A, which is Group B, and Group B is Group C. How many people are there in Group C?
23. Put the red, yellow and white balls together. Red ball 15 is the number of white balls and the number of white balls is the number of yellow balls. How many yellow balls are there?
24. The sum of a number and this number is 44 more than this number. What is the number of balls?
25. Car A runs straight from A to B, 5 kilometers from the midpoint. How far is the ball between A and B?
26. A car travels from A to B, with a journey of 15km, and then arrives at B. Find the distance between A and B. ..
27. Building a road, 403 meters have been built, and those that have not been built are 290 meters more than this road. How long is this road?
28. Xiaohong read a book the day before yesterday. Yesterday she read 65 pages more than the day before yesterday, and didn't read the whole book. How many pages are there in this book?
Section 2 Fraction Application Exercise (2)
1, a rope, 3 meters longer than it, find the length of the rope.
2. The sum of a certain number and this number is 44 more than this number. Did you find this number?
3. If a job is completed on the first day and the next day, it will be overfulfilled 12. How many items are planned to be completed?
4. read books. Those who read the whole book the day before yesterday read more than 20 pages. How many pages are there in this book?
5. read a book. The day before yesterday, the whole book 12 pages. Eight pages were missing yesterday, and there are still 20 pages left to read. How many pages are there in this book?
6. read a book. Those who read the whole book the day before yesterday read 42 pages more than others. How many pages are there in this book?
7. There are 702 students in a school, with fewer girls than boys 18. How many boys and girls are there?
8. Party A and Party B have two barrels of oil of 44kg. If A pours out, B pours out 2.8 kilograms, and the remaining oil in two barrels is equal, then how many kilograms each?
9. There are *** 152 students in grade five. Boys were selected and five girls attended the forum. There are equal numbers of boys and girls. How many boys are there?
10, gold-copper alloy, in which the gold content is 30g more than the total weight, and the copper weight is 5g more than the total weight. What is the total weight?
1 1. If there are three ropes, the length of A minus 2.8m is equal to the length of B, the length of B minus 1.2m is equal to the length of C, and the length of C minus 1.5m is equal to the original length of a rope, how many meters is the original length of a rope?
12, granary A stores a batch of grain, and granary A has more bags than granary B 120. If 25 bags are transferred from B to a granary, B is a granary. How many bags do you want?
The mixed operation of adding and subtracting scores in the second volume of the fifth grade of mathematics (the fifth grade questions cannot be set to X\ and Y\ ha) ... hehe.
Suppose: the capacity of a bottle of milk is 3 liters.
I drank 1 liter of milk for the first time;
I drank 1 liter of milk and 0.5 liter of water for the second time;
(Because there are only 2 liters of milk and 1 liter of water in it, divide by 2 and you get it. )
Drink 1 liter of milk for the third time, 2 liters of water;
Results Subtotal: Drink 3 liters of milk and 2.5 liters of water. Answer: Drink more milk! ! !
The mixed operation of 5\2-(3\2+4\5) fractions in the second volume of fifth grade mathematics.
7\8+ 1\8+ 1\9
9\7-(2\7- 10\2 1)
240\400+ 12\400- 150\400
2\3+5\9-2\3+5\9
186\240+88\240+252\240
6\7+2\ 15+ 1\7+ 13\ 15
8\9+ 1\4+ 1\9+3\4
2\3+5\9-2\3+5\9
7/8 + ( 1/8 + 1/9 )
9/7 - ( 2/7 – 10/2 1 )
1/2+3/4-3/ 10= 19/20
2/9+5/6+ 1/3=25/ 18
4/5-3/ 10+2/3=7/6
1/2-3/4+3/8= 1/8
5/6- 1/3+3/ 10= 1/5
7/ 12-5/24+2/3
1/2- 1/3- 1/6
4/7+5/ 1 1+5/7
5/8+2/ 1 1+9/ 1 1
17/24+5/ 12- 1 1/24
1 1/ 12+ 1/6-5/24
5/6-5/7+ 1/6- 1/7
4/5-( 1/4+2/5)
1- 1/4-3/4
5/7+5/9+2/7+4/9
There are 50 mixed operations of addition and subtraction (not multiplication and division) in grade five, and the answers to the mixed operations of addition and subtraction in grade five are 1, 5/3+4/3+5/2+4/ 1.
2、8/5+65/49+8/3+65/ 16
3、9/ 1+8/7+9/8+8/ 1
4、3/ 1+8/7+3/2
5、7/2+5/3+7/5+5/2
6、 10/3+ 19/2+ 10/7
7、 13/5+ 12/ 1+ 13/8
8、24/ 13+25/9+24/ 1 1+25/ 16
9、9/7+8/3+9/2+8/5
Grade five, volume two, fractions, addition and subtraction, mixed operation, topic 1, 0.2008+2.008+20.08+200.8+2008.
=0.2008×( 1+ 10+ 100+ 1000+ 10000)
=0.2008× 1 1 1 10
=2230.888
2、 1÷(2÷3)÷(3÷4)÷(4÷5)÷(5÷6)÷……÷(2007÷2008)= 1×3/2×4/3×5/4×6/5×……×2008/2007
=2008
3、 1+ 1/3+ 1/6+ 1/ 10+……+ 1/2009× 1004
=2×( 1/2+ 1/6+ 1/ 12+ 1/20+……+ 1/2008×2009)
=2×( 1- 1/2+ 1/2- 1/3+ 1/3- 1/4+……+ 1/2008- 1/2009)
=2×( 1- 1/2009)
=2×2008/2009
=40 16/2009
What is the single digit of the product of 2006 times 2006 times 2007 times 2007 times 2008?
The single digit in 2006 was 6.
The single digit in 2007 was 3.
The single digit in 2008 was 6.
6×3×6= 108
So the single digit of the product of 2006 times 2006 times 2007 times 2007 times 2008 is 8.
5、325.24+425.24+625.24+925.24+525.24
=(300+400+600+900+500)+25.24×5
=2700+ 126.2
=2826.2
6、 1/ 1×4+ 1/4×7+ 1/7× 10+ 1/ 10× 13+……+ 1/2005×2008
=( 1- 1/4+ 1/4- 1/7+ 1/7- 1/ 10+ 1/ 10- 1/ 13+……+ 1/2005- 1/2008)÷3
=( 1- 1/2008)÷3
=2007/2008÷3
=669/2008
The fifth grade, the second volume, mixed operation problems1.45+15× 6 =135.
2.250÷5×8=400
3.6×5÷2×4=60
4.30×3+8=98
5.400÷4+20×5= 200
6. 10+ 12÷3+20=34
7.(80÷20+80)÷4=2 1
8.70+( 100- 10×5)= 120
9.360÷40+ 10= 19
10.40×20-200= 600
1 1.(80-25)*2= 1 10
12.70+45= 1 15
13.90×2÷3= 60
14. 16×6÷3= 32
15.300×6÷9= 200
16.540÷9×7=420
17.30×20÷ 15= 20
18.400÷4×7= 700
19.(350-80)÷9= 30
20. 160+70+50=280
2 1. 18-64÷8= 10
22.42÷6+20=27
23.40-5×7= 5
24.80+60÷3= 100
25.4 1+ 18÷2= 50
26.75- 1 1×5= 20
27.42+7-29= 20
28.5600÷80=70
29.25× 16÷4= 100
30. 120×25÷5= 600
3 1.36× 1 1÷3= 132
32. 1025÷25×8=328
33.336+70-6= 400
34.25×9×4= 900
35.200-33×3= 10 1
36.3020- 10 10=20 10
37. 12×50+ 10= 6 10
38.25×8+ 199= 399
39.23× 1 1- 13= 240
40. 125÷25-5=0
4 1.4200-2200+200=2200
42.220+80- 150= 150
43.20×8×5= 800
44.600-3×200=0
45.20+20÷2= 30
46.35-25÷5= 30
47.36+8-40= 4
4/3*8=6 5/3*20= 12 7/3* 14=6 8/7*40=35
4/3* 16= 12 9/5*27= 15 2/ 1*30= 15 12/7*24= 14
30/ 1*30= 1 5 1/9* 102= 18 19/9*76=36 4/9*8= 18
5/8*90= 144 99/98*99=98 3/ 14*6=28 7/ 1*28=4
10/ 1*90=9 5/3* 105=63 19/7*38= 14 5/ 1*25=5
8/ 19* 16=38 6 1/60* 122= 120 7/2*28=8 6/ 1*48=8
9/7* 18= 14 25/7* 100=28 9/5*8 1=45 8/9* 16= 18
No decimals
123+25= 148 123-35=88 56×7=392 135÷5=27
248+89=337 ... 146-23= 123 ... 155×5=775 ...456- 12=38 ...
456+45=50 1 ...546-457=89 ...45× 10=45 1 ...564- 12=47 ...
879+54=933 ...896-546=350 ...56× 12=672.45-5=9 ...
457+456=9 13 ...
7+ 14=2 1 ... 18-9=9 ...
8+ 16=24 ...25-5=20 ...
9+ 18=27...56-45= 1 1 ...
10+20=30...45-23=22 ...
1 1+22=33...78-23=55 ...
12+24=36 ...
10-3=7
15-4= 1 1
20-5= 15
25-6= 19
30-7=23
35-8=27
40-9=3 1
45- 10=35
50- 1 1=39
55- 12=43
1)25%* 132+ 1/4*8 2)32*0. 125*25
= 1/4* 132+ 1/4*8 =(4+8)*0. 125*25
= 1/4*( 132+8) =(4*25)*(8*0. 125)
= 1/4* 140 = 100* 1
=35 = 1000
3)75%*76+25*4+0.75* 12
=3/4*76+3/4* 12+25*4
=3/4*88+ 100
= 166
4)3200* 1/8÷2/5+ 1270 5)(2/3+4/5)*7/6
=400*5/2+ 1270 =22/ 15*7/6
= 1000+ 1270 =77/45
=2270
5)6*( 1/2+2/3) 6) 132*(44÷ 176)
=6* 1/2+6*2/3 = 132* 1/4 =33
=3+4
=7
7)72.25%*99+75.25%
=75.25%*99+75.25%* 1
=75.25%*(99+ 1)
=75.25%* 100
=75.25
FYI
The mixed operation of adding and subtracting fractions in the second volume of Grade Five 300 5\2-(3\2+4\5)
7\8+ 1\8+ 1\9
9\7-(2\7- 10\2 1)
240\400+ 12\400- 150\400
2\3+5\9-2\3+5\9
186\240+88\240+252\240
6\7+2\ 15+ 1\7+ 13\ 15
8\9+ 1\4+ 1\9+3\4
2\3+5\9-2\3+5\9
7/8 + ( 1/8 + 1/9 )
9/7 - ( 2/7 – 10/2 1 )
1/2+3/4-3/ 10= 19/20
2/9+5/6+ 1/3=25/ 18
4/5-3/ 10+2/3=7/6
1/2-3/4+3/8= 1/8
5/6- 1/3+3/ 10= 1/5
7/ 12-5/24+2/3
1/2- 1/3- 1/6
4/7+5/ 1 1+5/7
5/8+2/ 1 1+9/ 1 1
17/24+5/ 12- 1 1/24
1 1/ 12+ 1/6-5/24
5/6-5/7+ 1/6- 1/7
4/5-( 1/4+2/5)
1- 1/4-3/4
5/7+5/9+2/7+4/9
That's all. Just make do with it.
Fifth grade volume fraction addition and subtraction mixed operation calculation problem fifth grade volume mathematics fraction addition and subtraction special exercise problem _ Baidu Library
:wenku . Baidu ./view/c 188 c 65702020740 BF 1e9b 04。 ? Review again
There are many of them. Go find them!