1. 100.5438+003 is pronounced as () and 50.50 is written as ().
2. One percent, one percent and one thousandth of a number are 6, and all other numbers are 0. This number.
Is (), accurate to the tenth place is ().
3. Change the operation order of 264-28×6÷2. First, seek the difference and quotient, and finally seek the product. The original formula becomes
( )。
4. The lengths of the three sides of the triangle are 3cm, 3cm and 4cm respectively, and they are divided according to the sides.
This is a () triangle; It takes at least () cm of rope to form this triangle.
5. A square has a () axis of symmetry, and a circle has a () axis of symmetry.
6.12km 50m = () km 8.04m2 = () square decimeter
7. In a triangle, it is known that ∠ 1= 720, ∠2= 480 and ∠ 3 = (); The base angle of an isosceles triangle is 45o. This triangle must be a () triangle (classified by angle).
8.9.0968 Accurate to the tenth place is about (), with two decimal places reserved about () and integer reserved about ().
10. Reduce 25 to 0.025 and move the decimal point 7.8 to the right by two places ().
1 1. Write 306900 as a number in "ten thousand" (), and change 687430000 into a number in "one hundred million" and write it as ().
Choose carefully and put the serial number of the correct answer in brackets.
1. The right triangle is () degrees high.
A. 1 Article B. 2 Article C. 3
2. The () from one vertex of the triangle to the opposite side is the height of the triangle.
A. straight line B. line segment C. vertical line segment
3. Move the decimal point of 6.25 to the left by one place and then to the right by two places, and the number obtained is compared with 6.25 ().
A. zoom in 10 times B. zoom out 10 times C. zoom in 100 times D. keep the size unchanged.
4. The following () is a decimal equal to.
A.0.00 19
5. Of the three angles of a triangle, only two are acute angles, and this triangle must not be a () triangle.
A. obtuse angle B. right angle C. acute angle D. isosceles
Third, the judge.
1.42÷6×9 and 42+6×9 have the same operation order. ( )
2. If the decimal point of 0.067 is removed, its value will be expanded to 100 times. ( )
The smallest two decimal places are 0. 1 1. ( )
4.3.42 is an integer between 3 and 4. ( )
5.0.8 There are 80 1%. ( )
Fourth, calculation.
1.
0.78+0.06= 0.4× 1000= 6- 1.6= 32 1-73-27=
7 1.2+5.3= 0×2 18= 0. 10 1× 100= 40-30÷5=
※ 2. Vertical calculation and checking calculation.
8.2 1+0.908= ※ 100-9.735=
2. Calculate the following questions as simply as possible.
5 1.27-8.66- 1.34 96×37+37×3+37 18.2+ 1.57+2.8+0.43
(37+28)×(96÷8) 10 1×87 120+935÷ 17× 12
5. What are the shapes of the following objects from the front, left and above? Please draw it on square paper.
6. Go into life and solve problems.
1. The fruit shop bought back apples 150 Jin and pears 30 Jin, four times more than apples. How many Jin of pears and apples did you buy back?
2. In a parking lot, there are 32 cars and tricycles, 108 wheels. How many cars and tricycles are there?
3. The average weight of four students is 43kg, and the average weight of the fifth student is 38kg. What is the average weight of these five students?
To celebrate Children's Day on June 1st, Mr. Wang bought children's costumes, up to three T-shirts and five shorts. 39 yuan, how much is each pair of shorts and each T-shirt?
5.28 teachers took 664 students for a spring outing. Each cart can seat 45 people, each car can seat 18 people, and the rent is 500 yuan. What is the cheapest way to rent a car?