1, (180-6×15) ÷ 7.5 =12 (days)
2. The construction site needs sand 106 tons, and car transportation 15 times, with 2.4 tons each time. The rest are transported by cart, 5 tons each time. How many times will it take to complete?
2. (106-2.4×15) ÷ 5 =14 (times)
Zhang Li bought four fables and four English humors, gave them 20 yuan and took them back to 7.6 yuan. Every fable 1.6 yuan. How much is each English humor?
3. (20-7.6) ÷ 4-1.6 =1.5 (yuan)
There used to be 30 boats in People's Park, which could bring 540 yuan's income every day. Now there are more 15 boats than before. What's your daily income now?
4, 540 ÷ 30× (30+15) = 810 (yuan)
5. The TV factory originally planned to produce 1680 color TV sets in 36 days, but half of them were completed in the first 16 days. The rest of the plan will be completed within 6 days. How many units are produced on average every day?
5, 1680 ÷ 2 ÷ 6 = 140 (Taiwan Province)
1. A factory has a batch of coal. It was originally planned to burn 5 tons a day, which can last for 45 days. In fact, it burns 0.5 tons less every day. How many days can this batch of coal burn?
1, 5× 45 ÷ (5-0.5) = 50 (days)
2. The school bought150m long plastic rope, cut off 7.5m first, and made three skipping ropes with the same length. According to this calculation, how many plastic ropes are left?
2.( 150-7.5) ÷ (7.5 ÷ 3) = 57 (root)
3. To build the canal, it was originally planned to build 0.48km every day and complete it in 30 days. Actually, it's repairing 0.02 kilometers every day. How many days was it actually repaired?
3.0.48× 30 ÷ (0.48+0.02) = 28.8 (days)
4. Miss Wang reads a book. If he reads 32 pages every day, 15 days will be enough. Now I read 40 pages a day. I can finish reading them a few days in advance.
4. 15-32× 15 ÷ 40 = 3 (days)
A car traveled 260 kilometers in four hours. At this speed, it traveled for another 2.4 hours. How many kilometers have you traveled before and after? (Answer in two ways)
5, 260 ÷ 4× 2.4+260 = 4 16 (km) 260 ÷ 4× (4+2.4) = 4 16 (km)
6. Shihe Farm first dispatched 8 harvesters to harvest late rice, and harvested 19.2 hectares two days ago, and then increased to 13 harvesters. At the same speed, they cut for another four days. How many hectares of land have they cut down?
6.19.2 ÷ 2 ÷ 8× 4×13+19.2 = 81.6 (hectare)
7. The distance between Party A and Party B is 600 kilometers. A bus and a truck run from Party A to Party B at the same time. The bus arrived four hours earlier than the truck. When the bus arrived at Party B, the truck traveled 400 kilometers. How long does the bus take to complete the journey?
7,600 ÷ [(600-400) ÷ 4]-4 = 8 (hours) or 4 ÷ (600 ÷ 400- 1) = 8 (hours).
The distance between Party A and Party B is 500 kilometers. Party A travels 30 kilometers per hour and Party B travels 20 kilometers per hour. How many hours did you meet when you left at the same time?
500÷(30+20)= 10
1. This store has 2 10 color TV sets, which is 3 times more than black and white TV sets. How many black and white TV sets are there in this shop?
1.63 sets
2. Use a wire with the length of 12.4 decimeter to form an isosceles trapezoid. It is known that the two waists of this trapezoid are 6.4 decimeters long and the area is 9 square decimeters. What is the height of this trapezoid? (Equation solving)
2.3 meters
There are several geese and ducks in the river, among which the number of ducks is four times that of geese. It is also known that there are 27 geese in Abby Mallard. How many are there in each goose and duck?
There are 9 geese and 36 ducks.
4. A forest farm should plant 2000 trees, with an average of 350 trees per day in the first three days. The rest are required to be planted in two days. How many trees should be planted on average every day? 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
60- 13=47
65- 14=5 1
70- 15=55
75- 16=59
80- 17=63
85- 18=67
90- 19=7 1
95-20=75
100-2 1=79
105-22=83
1 10-23=87
1 15-24=9 1
120-25=95
125-26=99
130-27= 103
13+26=39 ...
14+28=42 ...
15+30=45 ...
16+32=48 ...
17+34=5 1 ...
18+36=54 ...
19+38=57 ...
20+40=60 ...
2 1+42=63 ...
22+44=66 ...
23+46=69 ...
24+48=72 ...
25+50=75 ...
26+52=78 ...
27+54=8 1 ...
28+56=84 ...
29+58=87 ...
30+60=90 ...
3 1+62=93 ...
32+64=96 ...
33+66=99 ...
5 ÷ 1 =5
10 ÷2 =5
15 ÷3 =5
20 ÷4 =5
25 ÷5 =5
30 ÷6 =5
35 ÷7 =5
40 ÷8 =5
45 ÷9 =5
50 ÷ 10 =5
55 ÷ 1 1 =5
60 ÷ 12 =5
65 ÷ 13 =5
70 ÷ 14 =5
75 ÷ 15 =5
80 ÷ 16= 5
85 ÷ 17 =5
90 ÷ 18= 5
95 ÷ 19 =5
100 ÷20= 5 4.4÷ 1 1= 0.3×0.3= 0÷730= 0.03× 10-0. 1=
7÷5= 0.25÷0.5= 0.53×7= 125×0.5×0.8=
1.9×0.5= 29×5= 2.3×0.8= 0.2×7.6×50=
Two, simple calculation problems (6 points)
9.9×8.6+0.86
Third, the calculation problem (6 points for each small question *** 12 points)
1.3-7. 14÷3.5× 1.05
2.[20-(90.75÷6.6+2.25)]× 1 1.6
First, oral problems (12 points)
0. 1×208= 7.2÷36= 4.8÷ 16=
1.3×50= 0.5×20= 0.8 1÷0.09=
4.2÷4= 0.98÷7= 0.39÷ 1.3=
2.5×40= 4.7×2= 0.4×0.5=
Two, simple calculation problems (6 points)
0.46×7.5+0.46×2.5
Third, the calculation problem (6 points for each small question *** 12 points)
1. 1.08÷(3.94+34.3×0.2)-0.08
2.4.8× (11.03-15.6 ÷ 7.5)1.a3 must be greater than 3a. ( )
2. "0" means there is no object, so 0 is not a number. ( )
Divide 3.0 by any number to get 0. ( )
4. Natural numbers can represent both "how much" and "what number". ( )
5. "There are three passengers living in Room Three." The two 3s in this sentence have different meanings. ( )
6. If 1÷a=b, then A and B are reciprocal. ( )
7. There is only one decimal greater than 1.4 and less than 1.6. ( )
9. If a score is less than its reciprocal, it must be a real score. ( )
10. When a number is multiplied by a true fraction, the products obtained are all less than the multiplicand. ( )
12. False score is definitely not the simplest score. ( )
13. The score is less than an integer. ( )
16. The numerator and denominator of the fraction are multiplied or divided by the same natural number at the same time, and the size of the fraction remains unchanged. ( )
17.85000 ml =85 liters =85 cubic decimeters. ( )
The product of 18.4 is 0. 25 is 1. ( )
19. The second half of February in a normal year is 9 days. ( )
20. 1996 is a leap year, when the sixth Olympic Games was held in the United States. Therefore, the Olympic Games will be held in leap years every four years. ( )
2 1. The minute of the clock turns once, and the hour hand turns 30. ( )
None of the four zeros of 23.5500 is read. ( )
24. The greater the denominator of a score, the greater the unit of the score. ( )
25. The maximum decimal counting unit is 80% smaller than the maximum number unit. ( )
26. unit of volume is larger than an area unit. ( )
27.A and B are both natural numbers. If a number ÷0.52= B number, then a number must be less than b number. ( )
28.5.3727327 is a cyclic decimal. ( )
( )
30.7.8+7.8+2.2+2.2=(7.8+2.2)×2。 ( )
5 times of 3 1.x is 0.7 and less than 3.2, so the equation for finding X. column is 5x-3.2=0.7. ( )
32. The value of the unknown quantity that makes both sides of the equation equal is called solving the equation. ( )
33. 15 ÷ 10 =1.5. It can be said that 15 is 0.5 times of 10, so15 is a multiple of10. ( )
34.4.9 Divided by 1.6 quotient 3, the remainder is 1. ( )
37.70% translated into 70%. ( )
38. 30% of1meter is 30% meter. ( )
39.0.8 and 0.800 have the same size and the same counting unit. ( )
40. Add 0 to the end of the decimal, and the size of the decimal remains the same. ( )
Add a "%"after 4 1.20, and subtract 100 times from the figure. ( )
( )
45. If the number A increases by 100%, which is exactly equal to the number B, then the original number A is twice that of the number B. ()
( )
( )
49. If the number of girls is less than 4% of the class, then the number of boys is more than 4% of the class. ( )
50. Flour is 45 tons less than rice. If rice and flour are sold at 40% each, rice is 45 tons more than flour. ( )
Absolute equality. ( )
52. From A to B, A takes 10 hour, B takes 8 hours, and B is 25% faster ... ()
53. Grade 6 102 people took the graduation examination and all passed, with a passing rate of 102%. ( )
54. Students in Class Six (1) did a math problem, and 40 students were right and 4 students were wrong. The error rate of solving this problem is 10%. ( )
55. Donations were made to the disaster-stricken areas, with 54 people in six classes (1), and the donation rate was 100%. 54 people in this class donated money. ( )
56. Small military families participate in "ordinary family property insurance", with the insured amount of 30,000 yuan, calculated at the insurance rate of 0.2% per year. After three years of insurance, the premium is 180 yuan. ( )
57. The sum of all prime numbers within10 is still a prime number. ( )
58. All odd numbers are prime numbers and all even numbers are composite numbers. ( )
59. The product of two prime numbers must be a composite number. ( )
60. Natural numbers are either prime numbers or composite numbers. ( )
The composite number of 6 1. can be divisible by 2. ( )
62. A composite number has at least three divisors. ( )
63. The sum of three natural numbers must be less than their product. ( )
64. Because a÷b=7, A can be divisible by B. ()
65. The divisor and multiple of a number are sometimes equal. ( )
66. The least common multiple of two numbers must be the multiple of their greatest common divisor. ( )
67. In a÷b=c, if A is divisible by B, then A is a multiple of B and also a multiple of C .. ()
68.A number is a multiple of B number, and B number is the greatest common divisor of A number. ( )
The prime factor of 69.90 decomposition is 90=2×5×9. ( )
70. Two numbers whose divisor is 1 are called prime numbers. ( )
7 1. The prime number is only 1 divisor. ( )
72. A prime number and any natural number smaller than it are all prime numbers. ( )
73. The common divisor is only 1 two different numbers, which must be prime numbers. ( )
74. If the product of two numbers is their least common multiple, then these two numbers must be prime numbers. ( )
75. If A and B are different prime numbers, then A and B must be prime numbers. ( )
76. Two numbers are prime numbers, not necessarily prime numbers. ( )
77. A number that contains both divisor 2 and divisible by 3 must be a multiple of 6. ( )
78. The sum of the upper and lower bottoms of a trapezoid is certain, and its height is directly proportional to its area. ( )
79. The area of one side of a cube is directly proportional to its surface area. ( )
80. The former term of the ratio is fixed, and the latter term is inversely proportional to the ratio. ( )
82. Xiaoying 10 minutes, Xiaoming comes home from school in 8 minutes. The speed ratio between Xiaoying and Xiaoming is 4: 5. ( )
83. 1.4: 2 can be proportional to 7: 10. ( )
84. If 3a = 4b and neither a nor b is zero, then A: B = 3: 4. ( )
16∶9。 ( )
( )
87. In proportion, if the product of the two numbers that make up the inner term is 1, then the two numbers that make up the outer term are reciprocal. ( )
89. In order to clearly show the altitude of Wuyue Mountain, a histogram can be drawn. ( )
90. On the map, the 6 cm line segment represents the actual distance of 6 km. The scale of this map is 1: 100000. ( )
9 1. The longer the two sides of an angle, the larger the angle. ( )
92. The obtuse angle must be greater than the right angle. ( )
93. A trapezoid has an axis of symmetry. ( )
94. The picture on the right is a graph with four equal circles close together, and it has four axes of symmetry. ( )
95. If the length and width of a rectangle increase by 6 meters, the area will increase by 36 square meters. ( )
96. The three angles of an isosceles triangle must be 45,45 ().
97. Divide an equilateral triangle into three triangles, and the sum of the internal angles of these three triangles is 540 degrees. ( )
98. At least two angles in a triangle are acute. ( )
99. An isosceles triangle can be cut along the height of the bottom of the isosceles triangle and divided into two equal right triangles. ( )
100. Four sides of a parallelogram, each of which can be used as the base. ( )
10 1. If the heights of triangle and parallelogram are equal, the area of triangle is half that of parallelogram. ( )
102. If two groups of opposite sides of a parallelogram are equal to two groups of opposite sides of a rectangle, their areas are equal. ( )
103. Two trapezoids with the same area can be combined into a parallelogram. ( )
104. Two identical isosceles trapezoid can be combined into a parallelogram. ( )
105. All circles have equal pi. ( )
106. The line segment passing through the center of the circle is called the diameter. ( )
107. The area of a circle is directly proportional to its radius. ( )
108. When the side length of a cube is doubled, its volume is also doubled. ( )
109. The base area of a cuboid is 10 square decimeter, the height is 7 cm, and the volume is 7 cubic decimeter. ( )
1 10. Tie a cross packing rope on both sides of the rectangular commodity packing box, and the length of the packing rope used should be at least the sum of the sides of the carton. ( )
1 1 1. The radius of the cylinder bottom is r, the height is h, and its surface area is 2π(h+r) indicated by letters. ( )
1 12. The radius of the bottom surface of the cylinder is enlarged by 2 times, the height is also enlarged by 2 times, and the side area is enlarged by 4 times. ( )
1 13. A cylinder is 2 meters long. After being divided into two equal sections, the surface area is increased by 6.28 square decimeter, so the volume of each section is 3 1.4 cubic decimeter. ( )
1 15. The cylinder and the cone are equal in height, and the difference in volume is 6.28 cubic centimeters, so the sum of their volumes is 12.56 cubic centimeters. ( )
1 16. Any prime plus 1 is not necessarily an even number. ( )
1 17. The coprime of two numbers must be a prime number. ( )
1 18. All composite numbers can be expressed by multiplying prime numbers. ( )
1 19. The original quantity is reduced by 20%. Get a new number, the original number is 20% more than the new number. ( )
120. Any circle has countless axes of symmetry. ( )
12 1. Two disjoint straight lines are called parallel lines. ( )
122. The product of any natural number multiplied by 2 must be a composite number. ( )
123. The area of parallelogram is equal to twice the area of triangle. ( )
124. 1 divided by any natural number is equal to the reciprocal of this natural number. ( )
125. The numerator of a false fraction must be greater than its denominator. ( )
126. Because 3x=5y and x∶y=5∶3. ( )
127. Two sectors with equal central angles have equal areas. ( )
128. The side length of a square is equal to the radius of a circle, so the ratio of square area to circle area is 1: π. ( )
129. In proportion, if the product of two outer terms is 1, then the two inner terms must be reciprocal. ( )
130.6.444 is a cyclic decimal. ( )
13 1. The smallest prime number is the greatest common divisor of all even numbers in a natural number. ( )
132. An equilateral triangle must be an acute triangle. ( )
133.A×B= 1, then the numbers a and b are reversed ().
134. The least common multiple of any two different natural numbers is greater than either of these two numbers. ( )
135. It takes 2 hours for Party A to do it alone and 3 hours for Party B to do it alone. ()
136. The number of boys is 5% more than that of girls. Then girls are 5% less than boys. ( )