Elementary School Questions! It s better to calculate the comprehensive formula!!

1. B: 60 C: 60 * (1 2) = 30 D: 60 (3 4) = 80

4000 * [1 8 + (1 8) * (3 4)] = 3125 (m) = km).

A is three-quarters of the number C? It should be a ding number.

60 60 = 30 60 = 80 A: B 40 C 30 D 80

3125m A: There are 3125m left.

1. C is one-half of A, and A is three-quarters of C's number?

4000*1/8*(1+3/4)=3125 m

1 Answer: 60 is B 60 is C (Table: The penultimate sentence of the first question thinks it is nonsense, and the previous sentence is not all told.) Either there is an error in this question) 2 Answer: 4000 4000 4000 3 4

Number B: 60 divided by 40 Number C: 60 One half is equal to 30 4000 One eighth 3/4) 500 meters.

2 questions. 4000*1 8=500 (m) 500*3 4=375 (m) 4000-500-375=3125 (m) 3125m = km A: There are kilometers left.

I only have application question 1) There are several goldfish in the fish tank, of which the red goldfish account for all and the black goldfish account for all of them. What percentage of all goldfish are red and black goldfish?

2) The road repair team repaired exactly half of the whole road in three days, the first day repaired the whole road, the second day repaired the whole road, and the third day repaired the whole road?

3) Red Star Primary School built a rectangular playground with a length of 60 meters and a width of 45 meters. Spread 10 cm thick triad soil first, and then 4 cm thick cinders. How many cubic meters more cubic meters of triple soil is needed than cinder?

4) Make a rectangular tin sink without a lid, the length is 85 cm, the width and height are both 50 cm, at least how many square decimeters of tin sheet should be used? Loose wax.

5) The badge factory took one month to process a batch of 2008 Olympic medals. In the first half of the month, all of it was processed, and in the second half of the month, what fraction of all of it was processed less than in the first half of the month?

6) A rectangular fuel tank, 70 cm long, 44 cm wide and 25 cm high. What is the maximum amount of fuel in this tank? If the price of each litre of petrol is calculated in dollars, how much does it take to fill up such a tank of petrol?

1 When Xiao Ming reads a book, he reads an average of pages per day for the first 4 days, and a total of 24 pages for the last 3 days.

2 Below is the temperature of a place at four times of the day, and the average temperature for that day is calculated.

3 A kind of denier wooden box, long meters, wide meters, 1 meter high, if the outside is painted on all sides, what is the area of the paint?

4 There is a kind of cuboid steel, 2 meters long, the cross-section is a square with a side length of 5 centimeters, and each cubic decimeter of steel weighs kilograms, how many kilograms does this square steel weigh?

5 There is a fish pond 18 meters long, 12 meters wide, deep meters, to plaster a layer of cement on all surfaces of the fish pond to prevent water seepage, if 5 kg of cement per square meter, how many kg of cement is needed?

6 What is the surface area of a 64 cubic centimeter cube cut from a 6 cm long cuboid?

7 A number that is divisible by both 6 and 9, the smallest being polymodulus or less?

8 A rectangular sheet of paper, 48 cm long and 36 cm wide. To cut this piece of paper into squares of equal size with no leftovers, what is the longest side length of the square?

9. Class 5 (1) students do exercises, there are 3 more students for every 8 people in a row, and 3 more people for every 10 people in a row, how many students are there in this class at least?

10. Xiao Ming has to walk 45 minutes from school to the Children's Palace, and Xiao Lin has to walk 48 minutes from the school to the Children's Palace. Who's faster?

=2/69x23+2/71x23+25/71

2 3 + (46 wheel hall silver cherry 71 + 25 71).

5 Laboyin 3 or 1 and 2 3

What kind of huh? Give an example question!!

1. If Xiaomin is x years old, then the father is 5x years old.

5x+8 = (x+8)*3

x=8A: ......

2.Set Apple X

x - x-50-5) = (x-50-5)/2x=165

165 apples, 115 pears

1) The land area approximates about the earth's surface area: 14870 51100 2) The ocean area approximates the earth's surface area: (51100-14870) 51100 Through the inspection of the processed parts by Master Zhang, it was found that for every 50 parts he processed, there were two defective products.

According to such a pass rate, if he processes 100 qualified products, how many parts does he have to process at least?

Solution: (50-2) 50=96%.

100 96% = 105.

3×===

12560kg

3) (1 out of 40 2).

1 in 400

1256 60 1/3

75360 1 out of 3

25120cm³

25120cm³=

Yuan) (4) 5-31 4 [.]

(1)3×==

12560kg

3) (1 out of 40 2).

1 in 400

1256 60 1/3

75360 1 out of 3

25120cm³

25120cm³=

Yuan) (4) Can't understand?

1. Buy food 26 yuan, 13 yuan per serving, comprehensive food varieties, 2 + 3 + 8 = 13, or 5 + 8 = 13, 2, (12 300-150) 15 = 230 pieces.

1.Let there be x potted flowers on each side, and get: 4(x-1)=60 to get x=16

2.Let at least x potted flowers get (x 6) + 1 = 10 to get x = 54

3 set x potted flowers on each side to get 4 (x-1) = 84 to get x = 22

1.﹙60－4﹚÷4＋2=16.Place 16 pots of flowers on each side.

2.﹙10－2﹚×6＋6=54.A minimum of 54 potted flowers is required.

3.﹙84－4﹚÷4＋2=22.The outermost layer has 22 potted flowers on each side.

Solution: If there are x boys and y girls in the gymnasium, then there are x+y people in the gymnasium according to the equations of the question:

x=2×（y-10）..

2×（x-45）=y-10...

Substitute 2 (2y-20-45)=y-10

4y-130=y-10

3y=120

y=40x=2(y-10)=2 (40-10)=2 30=60 (person) x+y=40+60=100 (person).

A: Originally, there were 100 people in the gymnasium.

2×(20+45)-10 120÷（4-1) 2×（40-10）=60

130-10 = 40 people Originally, there were 100 students in the gymnasium.

x=2*（y-10）..

2*（x-45）=y-10...

Substitute 2 (2y-20-45)=y-10

4y-130=y-10

3y=120

y=40x=2（y-10）=2*（40-10）=2*30=60x+y=40+60=100

A: Originally, there were 100 people in the gymnasium.

(1) If a number is 51, what is 2/3 of it?

2) How many fractions of a 6 is 5 points 3 more than 6?