1.( 1) 28.26 94.2 150.72 14 1.3 47. 1
(2)56.52
(3)25 1.2
(4)25. 12
2. 12.56x4=50.24dm？
( 12.56/3. 14/2)? x3. 14= 12.56dm？
50.24+ 12.56=62.8dm？
A: Need 62.8dm?
(2)( 12.56/3. 14/2)? x3. 14x4=50.24dm？
Answer: It can hold 50.24 kilograms of water (note: 1dm? = 1kg)
3. Solution: Let the cylinder volume be xdm?
x+ 1/3x=60
3/4x=60
x=45
A: the volume of the cylinder is 45dm?
4.9x 1/3=3dm
A: The height of the cylinder is 3dm.
Hope to adopt!
Is there an answer to the second volume 2 1 of the sixth grade mathematics report published by Jiangsu Education Publishing House?
Su Jiaoban Primary School Sixth Grade Book II Mathematics Book 66 67 68 69 Page Answer (1) 0.6:1= 0.61.2: 2 = 0.6.
1.8:3=0.6 The proportions are equal.
(2) indicates the working efficiency of the rice mill.
(3) Omission
Su Jiaoban Primary School Grade Six Volume I Mathematics 1 17 Page 23 Answer! (1) 50 * 40+50 * 30 * 2+40 * 30 * 2 = 7400 (square centimeter)
(2)40 liters = 40 cubic decimeters = 40,000 cubic centimeters 40,000/(50 * 40) = 20 (centimeters)
(3) 2.5 * 50 * 40 = 5000 (cubic centimeter)
Jiangsu education printing plate sixth grade mathematics exercise book 20, 2 1 page answer 2 1 page.
I.2/3 54 II.20.933 45.5438+0 III.838.38 IV.22.428 V.35.25 VI.5
If you have it, give 50 points ~ ~ kneel for the evaluation manual. Jiangsu Education Publishing House will evaluate the sixth grade unit. Answer 5 ~ 5. Positive proportion and inverse proportion.
The significance of positive proportion
1.( 1)
Quantity/box 1 2 3 4 5
Total price/RMB 35 70105140175
(2)70∶2 70∶2=35
140∶4 140∶4=35
In the same proportion
(3) unit price and total price per box ÷ quantity = unit price
(4) The unit price is fixed, and the total price is directly proportional to the quantity.
2.( 1)(√) (2)(√) (3)(√) (4)(√) (5)( )(6)(√) (7)(√) (8)(√)
Positive scale image
1.( 1)
Farming time/hour 1 2 3 4 6 8
Cultivated land area/hectare 4 8 12 16 24 32
(2)
(3) In direct proportion, because: = work efficiency (certain)
(4)48 12.5
2. In direct proportion, because: = work efficiency (certain)
The meaning of inverse ratio
1.( 1) ① Processing hours per hour.
(2) Processing Time Number 960 Total Processing Time Efficiency
(2)①
Tonnage per hectare 10 20 30 40 50 60 …
Fertilization hectares 60 30 20151210 …
② Inverse ratio: the total amount is fixed, and the tonnage of fertilization per hectare is inversely proportional to the number of hectares of fertilization.
2.( 1)(√) (2)( ) (3)( ) (4)(√) (5)(√)(6)(√) (7)( ) (8)(√) (9)( )
Positive proportion and inverse proportion
1.( 1) Antisense.
(2) Anti
Xiaohua Xiaoming Xiao Sheng Xiaofeng
The charge per minute is 300 240 200 150.
Minutes required 16 20 24 32
(3)
Xiaohua Xiaoming Xiao Sheng Xiaofeng
The number of meters traveled is 3000 2400 2000 1500.
The remaining meters are 1800 2400 2800 3300.
2.( 1) (proportional) (2) (proportional) (3) (disproportionate)
(4) (inverse proportion) (5) (positive proportion) (6) (positive proportion)
(7) (proportional) (8) (proportional) (9) (inverse ratio)
(10) (inverse proportion) (1 1) (out of proportion)
Unit 65438 +0, 2, 3, 5, 6 of the sixth grade mathematics evaluation manual of Jiangsu Education Press is easy to make mistakes. 1. Divide a rice rope into four sections on average, each section is () meters long, and each section accounts for () of the total length.
2. Yes; Yes (); () Yes.
3, according to the formula to supplement the conditions or questions.
(1) There are two ropes, one is 23 meters long, how long is the second one?
①23 × 13 ; ②23 + 13
③23 ×( 1- 13 ) ; ④23 ×( 1+ 13 )
(2) A book has 100 pages. How many pages have you read?
100× 15 ; 100×( 1- 15 )
(3) A 400-meter road has been built 15.
400× 15 ; 400×( 1- 15 )
(4) bright primary school planned to plant 1200 trees. As a result, 58 trees were planted for the first time and 35 trees were planted for the second time.
① 1200×35
② 1200×(58 -35 )
③ 1200×(58 +35 - 1)
4, () is 45 of 40; 40 is 45 of ()
More than 20 kg 14 is () kg; 20kg is smaller than () 15
5. A pile of coal weighs 45 tons, and it takes 10 hour for a truck to transport it. Then, it will take 4 hours to finish the work.
Service () (), 35 hours to complete the task.
6. From place A to place B, car A needs 10 hour and car B needs 15 hour ... The speed ratio between car A and car B is (). At this speed, the time ratio between a car and b car from b to c is ().
7. A rope is 5 meters long and divided into 8 segments on average, each segment is meters long and each segment accounts for the whole length.
8. Enlarge the former item of a ratio by 2 times and reduce the latter item by 2 times, and the ratio is ().
9. A rice mill can grind rice tons per hour, 1 hour can grind rice () tons, and it takes () hours to grind rice 1 ton.
10, and the ratio of side lengths of two cubes is 3: 2; The ratio of the surface areas of large and small cubes is (); The volume ratio of large and small cubes is ().
1 1, 1 ton rapeseed can squeeze tons of oil, 140 ton soybean can squeeze tons of oil; It takes () tons of soybeans to squeeze 140 tons of oil.
12. A bucket of water can fill 10 bowls or 12 cups. Pour 5 cups of water and 3 bowls of water into the empty bucket, and the water level accounts for () () of the bucket height.
13、( )20 =20÷( )=8:( )=0.8=( )%
14 and 120 increase 15%, which is (). () 10% is less than 60.
15, 45 meters is 90 meters ()% 5 tons is 500 kilograms ()%,
() is 80% of 20m () is more than 8, 10%, and 4 hours is less than 20% of ().
16, the oil yield of one rapeseed is 35%, 400 kg rapeseed can extract () kg oil, and it takes () kg rapeseed to extract 1400 kg oil.
17, (): 20= 12() =24÷( )=( )%= 20% = () fold.
18. Add () kg of water to 30 kg of salt, and you can get brine with a salt content of 30%.
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Original link:: dcjyw /news/view_7668。
What is the answer on page 15 of the exercise book for the sixth grade of primary school (Volume II)? You don't need a candle rhetorical question
A difficult experience, an unfortunate fate
Intelligence exposure, the end of a family of three.
Jack acted very calm.
The sixth grade math exercise book of Jiangsu Education Edition answers the first question 14, the second question1.244.8, the third question 5, the fourth question 15, the fifth question yellow 5, red 10, and the thinking question is one yuan and 75 cents.
Su Jiaoban Primary School Grade 6 Volume 2 Math Exercise Book 52 The answer is "Can you reward me quickly?"