1 80 million is rewritten as "10,000" ()

A, 08,000 b, 80 million c, 800,000 d, 800 million.

2, 2×3×6=36, and all three numbers of 2, 3 and 6 are 36 ().

A, multiple b, prime factor c, common divisor d, divisor

The actual length of a part is 7 mm, but the length measured on the drawing is 3.5 cm. The scale of this picture is ().

a、 1:2 B、 1:5 C、5: 1 D、2: 1

4. Saw the wire with the length of 13m into four equal parts, each of which is the original length ().

a、 13m b、 1 12m c、 14 D、 1 12。

5. Two natural numbers, the sum of their reciprocal is 12, and these two numbers are ().

A, 0 and 2 B, 1 and 1 C, 4 and 2 D, 3 and 6.

6. If 2/3 of A is equal to 3/5 of B, then A: B is equal to ().

a、6: 15 B、 10:9 C、 15:6 D、9: 10

7. Draw a circle with a compass. The circumference of the compass is 12.56 cm, and the distance between two feet of the compass is ().

a，2cm b，4cm c， 12.56cm。

8, Jianli hydrological station is used to measure the change of water level and () the selection of statistical chart.

A, horizontal bar b, dotted line c, fan-shaped

9. There is a () line segment here.

A, three B, four C, five D and six.

10, the bottom areas of cylinder and cone are equal, and the height of cone is three times that of cylinder. Then the volume of the cone () is the volume of the cylinder.

A, less than b, equal to c, greater than

1 1, the price of a commodity first rises 10%, and then falls 10%. Now the price of goods is higher than before ().

A, increase B, decrease C, no change.

The remainder of 12 and 2700÷500 is ().

a、2 B、20 C、200

13, the following numbers can't be converted into finite decimals ().

a、 1932 B、7 16 C、 1 13 15 D、720

14, 0.625× 5.8+58× 4.2 = 0.625× (5.8+4.2) This is the application of multiplication ().

A, commutative law b, associative law c, distributive law

15,911is expressed in decimals, and the result is () if it is accurate to one thousandth.

a、0.8 1 B、0.8 1.80 C、0.8 1.8D、0.8 1.9

16, a cylinder, dig out the largest cone and become a container. The volume of this container is the original cylinder ().

a、 13 B、23 C、33

17, the following fraction can be converted into a finite fraction is ().

a、7 1 1 B、760 C、734 D、735

18 plus 6,38. To keep the fraction size unchanged, please add () to the denominator.

a、6 B、7 C、8 D、 16

19, the radii of the small circle and the big circle are 2cm and 5cm respectively, and the ratio of the area of the small circle to the big circle is ().

a、2:5 B、4: 10 C、4:25 D、2: 10

The order of 20, 3 13, π and 3. 14 from big to small is ()

a、3 13 >π& gt； 3. 14 B、π& gt； 3 13 & gt； 3. 14 C、3. 14 & gt； 3 13 & gt； Pi?

2 1, the nearest integer is ()

a、4.08 1 B、4080 1 C、4089 1 D、40809

22, to make the four-digit 235□ divisible by 3, at least () is in the box.

a、 1 B、2 C、4 D、5

23, 14 meters long wire is divided into five sections on average, and the length of each section of wire is the whole length ().

a、 120m b、 120 C、 15m d、 15。

24. On a map, the distance of 60 kilometers is represented by 1 cm, and the scale of this map is ().

a、 160 B、 1600000 C、 16000 D、 1600000

25. the formula for rewriting a×b=c×d into proportion is ()

a:b=c:d B、a:c=b:d C、a:c=d:b

26. In the following equation, A is inversely proportional to B ().

a、6×a= b 1 1 B、35a = 78b C、4 × 3a = b ÷ 6

27. The volume of a grain warehouse is about 1500 ().

a，m b，m 2 c，m 3 d，l

28, the counting unit of 0.375 is ()

A, 0. 1 B, 0.0 1 C, 0.00 1 D, uncertain.

29, 5 kg of salt is dissolved in 20 kg of water, and the weight of salt accounts for () of brine.

a、45 B、 15 C、 14

30, rectangle has () axis of symmetry.

A, 1 B, 2 C, 4 D, countless articles

3 1, and two reciprocal quantities are ().

A, proportional to B, inversely proportional to C, out of proportion

The product of two reciprocal (1) is definite.

32, 0.695 keep two decimal places is ()

a、0.69 B、0.70 C、0.7 D、0.60

33,7.38 divided by 0.2 1, the quotient is 35, and the remainder is ().

A, B, C, D and III

34, 4 and 5 are ()

A, prime number b, coprime number c, prime factor d, factor

35. The volume of a cube with a side length of one centimeter is () cubic centimeters.

a、6a2 B、6a C、a+a+a D、a3

36, the volume of the cylinder is certain, and is inversely proportional to the height of the cylinder is ().

A, bottom perimeter b, bottom area c, bottom radius

37 and 3.2 have () one percent.

a、3.2 B、32 C、320 D、3200

38. The bottom area and volume of cylinder and cone are equal respectively. If the height of the cone is 9 cm, then the height of the cylinder is ().

A, 3 cm b, 9 cm c, 27 cm

39, rewrite 0.03 to 0.030, and the rewritten counting unit is ().

a、0. 1 B、0.0 1 C、0.00 1

40, 10 meter, after increasing its 15, it is ()

a， 10 15m b，945 C， 12m d，8m

4 1, constant speed, distance and time ()

A, proportional to B, inversely proportional to C, out of proportion

42, the weight of a table tennis is about 3 ()

Kilogram, pound, gram, ton, centimeter

43, 1995 There are () days in February.

a、28 B、29 C、30 D、3 1

A leap year is a year divisible by 4 or 400. There are 29 days in February of a leap year and 28 days in February of a normal year. There are 29 days in February of leap year, 366 days in a year, 28 days in February of normal year and 365 days in a year.

44. To make a8 a false score and a9 a true score, A should be equal to ().

a、7 B、8 C、9 D、 10

Fractions with numerator greater than or equal to denominator are called false fractions, and fractions with numerator less than denominator are called true fractions.

45. When a is a number greater than 0, the smallest calculation result in the following formula is ().

A, a×45 B, a÷45 C, a÷ 1 13 D, uncertain.

46. The length, width and height of a cuboid are a meter, b meter and h meter respectively. If the height is increased by 3 meters, the volume of the new cuboid will increase by () cubic meters.

a、3ab B、3abh C、ab(h+3) D、abh+33

47, the following graphics, the axis of symmetry is the most ()

A, square b, rectangle c, equilateral triangle d, circle

48, the following four groups of numbers, () group is a prime number.

A, 63 and 5 1 B, 16 and 40 C, 125 and 64 D, 15 and 130.

There is no common divisor except 1.

49. Two cars, A and B, were driving in opposite directions from both places at the same time, and met at a distance of 14 km. When the two cars met, the distance was () kilometers apart.

a、7 B、 14 C、28 D、42

50, 7.59 accurate to the percentile is ()

a、7.59 B、7.600 C、7.60 D、7.6

5 1, a vegetable field is semicircular, with a radius of r and a circumference of ().

a、2πr× 12 B、πr+r C、2πr D、r(2+π)

52. When the side length of a cube is doubled, the volume will be doubled.

a、2 B、4 C、8 D、 16

53, the decimal point to the right, the result is better than the original number ()

A, increase by 9 times b, increase by 10 times c, and decrease by 19.

54. Xiaoming spent 18 yuan to buy two books, of which 16 and 1 yuan, with an average of each book ().

A, 4 yuan B, 3 yuan C, 2.5 yuan D, 2 yuan E, 1.5 yuan.

55, known x5 =8y, then x and y ()

A, proportional to B, not proportional to C, inversely proportional

56. If the height of the cuboid and the cone are equal, then the volume of the cuboid is the volume of the cone ().

A, 3 b, 2 c, 1 d, 13.

57. It takes someone 13 hours to get from A to B, and he has already left 15 hours, leaving 960 meters. How many meters did he walk? The correct formula is ()

A, 960 degrees (13-15) B, 960 degrees (1- 13 )× 15.

C, 960 degrees (13-15 )× 15 degrees, 960×( 13-15)

58,5800 divided by 1600, the quotient is 3, and the remainder is ().

a、 10 B、 100 C、 1000

59. The perimeters of rectangles and squares are equal, so their area is greater than ().

A, square b, rectangle c, the same size

For example, 2× (2+6) or (3+5) = 4× 4.

If "%"is added after 30, the original number is ().

A, size unchanged b, reduced 100 times c, expanded 100 times.

6 1, the volume of thermos bottle is ()

A, 2 liters of B, 2 ml of C, 2 cubic meters

62, water into ice, the volume should be increased111,ice into water, the volume should be reduced ().

a、 1/ 10 B、 1/ 1 1 C、 1/ 12

63. Cut the largest round face on a square paper with an area of 36 square centimeters, so the circumference of the round face is ().

A, 28.26 cm2 b,18.84cm c,18cm.

The simplified ratio of 64.712:112 is ()

a、5 B、5: 1 C、 1:5

65. In a proportion, it is known that the product of two external terms is 1, and one of them is the smallest prime number, so the other external term is () the smallest prime number is 2, the smallest composite number is 4, and 0 is a natural number.

A, 12 B, 2 C, uncertain.

66, 9.45 () Reserved three decimal places is about ().

a、9.450 B、9.454 C、9.455 D、9.456

67. Cut the conductor with a length of1/5m into five equal parts, each with a length of ().

a， 1/5m B， 1/25m C， 1/5 D， 1/25。

68. On the map with the scale of 1: 5000000 km, the distance between the two cities is 10 cm, and the actual distance between the two cities is () km.

a、5 B、50 C、500 D、5000

The scale is in units, and the distance on the map must be converted from 10 cm to 0.000 1 km.

69, add a 0 after the decimal point, than the original number ()

A, big B and small C are the same size.

70, the diameter of a circle increased by 1 times, and the area was the original ().

A,16th b, 8th c, 4th d, 2nd.

7 1, there are some parts, and after inspection, 100 is qualified, and 1 is defective. Defective rate accounts for ()

a、 1/99 B、 1/ 100 C、 1/ 10 1

Defective rate =

72, A number is 25% more than B number, B number is A number ().

a、 100% B、80% C、75%

73, the radius of the circle is expanded by 2 times, and the area of the circle is expanded ()

A, twice b, four times c, eight times

74. The weight of part A is 3/4 kg, which is 1/2 of the weight of part B. The formula for finding the weight of part B is ().

a、34 × 12 B、 12 ÷34 C、34 ÷ 12

75. Fold a paper circle with a diameter of 10 cm in half and cut it into two semicircles with scissors. The formula for finding the circumference of a semicircle is ().

a、π× 10÷2+ 10 B、π× 10- 10 C、π× 10÷2

76. Among natural numbers, the number that can be divisible by 2 is ().

A, composite number b, prime number c, even number d, odd number

77. 2/5 of A is equal to 1/4 of B, then A is () B.

a 、> B 、< C、≤ D、≥

When number a and number b are equal, number a = number b.

78. Dissolve 5 grams of salt in 75 grams of water, so salt accounts for () of brine.

a、 1/20 B、 1/ 16 C、 1/ 15 D、 1/ 14

79.A= 3 years BC. If b is certain, a and c have a () relationship.

A, proportion B, anti-C, disproportionate D, proportional distribution

80, the following figure, there is only one axis of symmetry is ()

A, rectangle b, equilateral triangle c, isosceles triangle d, circle

8 1, () The statistical chart not only indicates the quantity, but also indicates the increase or decrease of the quantity.

Columns a and b, dotted lines c and d, percentage

The broken-line statistical chart can not only show the quantity, but also clearly show the change of the quantity.

82. Saw the 5-meter-long steel pipe into 8 segments on average, each segment accounting for () of this steel pipe.

a，5/8m b，5/8 C， 1/8

83, keep 0.65 () three decimal places is ().

a、0.658 B、0.656 C、0.655

84. The greatest common divisor of two numbers must contain the () of these two numbers.

A, all divisors B, all common prime factors C, and their unique prime factors.

85, with 18, 0.75,116,7 four numbers to form a proportion, the error is ().

a、 18:0.75 = 1 16:7 B、 1 16: 18 = 0.75:7 C、7:0.75 = 1 16: 18

86, 14 kg of bread made of flour weighs 25 kg, which percentage is increased? The correct answer is ()

a 、( 25 - 14 )÷25 B、25 ÷ 14C、 1- 14 ÷25 D 、( 25 - 14 )÷ 14

After adding a zero at the end of 87.4.3, the decimal unit is ().

A, 0. 1 B, 0.0 1 C, decile d, percentile.

88, drawing a statistical chart, in order to be able to clearly show the change of quantity, should choose ().

A, bar chart b, fan chart c, line chart

Conductors with a length of 89 and 5 meters are divided into 8 parts on average, and each part is 65438 0 meters ().

a，5/8m b，5/8 C，8/5 D， 1/8

90, 1.9965 rounded to one thousandth is ()

a、 1.99 B、 1.997 C、2.00 D、 1.996

9 1. When the side length of a cube doubles, its surface area increases ().

A, 2 times b, 4 times c, 12 times d, 8 times

Note: Expanding (to) 2 times means: both are 2 times the original.

Zooming in twice means that the enlarged part is twice as large as the original one, so it should be three times as large.

92, A and B are natural numbers, and 40% of A is equal to 13 of B, so A is () compared with B.

A, a > b b, a = b c, a < b d, incomparable.

93. If the water from barrel A 14 is poured into barrel B, and the water quality ratio of barrel A and barrel B is 1: 2, then the original water quality ratio of barrel A and barrel B is ().

A, B, C, D, D, V

(A-A): (B+A) = 1: 2 A = B: B = 4: 5

94, a triangle, the degree ratio of three internal angles is 2: 5: 2, and this triangle is ().

A, acute triangle b, obtuse triangle c, right triangle d, equilateral triangle

If the proportional distribution (2+5+2) = 9 180 (the sum of the internal angles of a triangle) ÷ 9 = 20 degrees, the three angles are 40, 100 and 40 degrees respectively.

95, a cylinder and a cone at the bottom of the area and volume are equal, respectively, the height of the cylinder is 3 meters, the height of the cone is ().

A, 13 decimeter b, 1 decimeter c, 6 decimeter d, 9 decimeter.

96. Forge a section of cylindrical steel column weighing 12kg into a cone with equal bottom, and the height of the cone is higher than that of the cylinder ().

A, the height of the cone is three times that of the cylinder; B is equal to c, and the height of the cone is 13 of that of the cylinder.

D, the height of the cone is cylindrical 23.

Equal weight means equal volume (weight = volume × steel density); The height relationship between a cylinder with equal volume and equal height and a cone: the height of the cone = 3 times the height of the cylinder.

97. In a cube with a side length of 1 decimeter, every time a cube with a side length of 1 cm is sawed, its surface area is now higher than the original ().

A, constant B, decrease C, increase D, uncertainty

A cube with a corner has six faces. Remove three and add three, so it remains the same.

98. The rolling distance of wheel A is 2 weeks, the rolling time of wheel B is 3 weeks, and the ratio of the diameters of wheel A and wheel B is ().

a、9:4 B、3:2 C、2:3 D、9: 1

99. The base length ratio of triangle A and triangle B is 2: 1, and the height ratio is 1: 2, so the area ratio of triangle A and triangle B is ().

a、2: 1 B、 1:2 C、 1: 1 D、3:2

100, the side length ratio of two squares is 5: 3, and the area ratio of two squares is ()

a、20: 12 B、25:9 C、 10:6 D、5:3