(2)5 m 3 cm = (5.3) m, 2.85 m =(285) cm; 3.74 Yuan =(3) Yuan (7) Jiao (4) fen
(3) Bar charts can also be drawn into statistical charts (line charts), which are characterized by (one unit represents a certain unit length).
(4) There are two simple calculation methods for 25× 44. The first method (=25*40+25*4) uses the law of distribution; The second method (20*44+5*44) applies the (combination) rule.
(5) 1.24 contains (124) 0.0 1, and (76) 0.0 1 is 2. If you leave a decimal place for it, it is (1.2).
(6) The top angle of an isosceles triangle is three times the bottom angle, and its top angle is (1 14). According to the angle classification, it is a (obtuse isosceles) triangle.
(7) A three-digit decimal is 4.8, the minimum number is (4.75) and the maximum number is (4.79).
(8) The school held a spring drill competition, with 403 classes arranged in 6 rows and 8 rows of rectangular queues. There are (36) students at the outermost layer of the team.
(9) Please arrange the numbers 0.6, 0.607, 0.067 and 0.67 in descending order (0.67, 0.607, 0.6 and 0.067).
(10) The decimal point of a number moves one place to the right and then three places to the left, which is less than the original number 198. The original number is (200).
2. Judgment (65438+ 0 point for each question, ***5 points)
(1)125× (8× 80) =125× 8+125× 80 (original) (×)
(2) The reception room of the school is 30 degrees southwest of the teaching building 1, so the teaching building 1 is 60 degrees northeast of the reception room. (Original) (×)
(3) Add 0 or remove 0 after the decimal point, and the size of the decimal point remains unchanged. (Adapted from special training in math class) (√)
(4) A triangle with an acute angle is called an acute triangle. (Original) (×)
(5)0.62 and 0.620 are equal, so they are the same number. (Adapted from New Thinking Test Paper) (√)
3. multiple choice questions. (65438+ 0 points for each question, ***5 points)
(1) does not change the size of the original number. In the following figures, all zeros can be deleted (b) (original)
a 25.304 B 23.700 C 0. 1056D 350.0
(2) Xiao Ming wants to put an isosceles triangle. He has used two sticks with a length of 4 cm and 5 cm respectively. He should choose another stick of length (d). (original)
A, 4cm b, 5cm c, 3cm d, 4cm or 5cm.
(3) The section angle of the parallelogram is 120, and the sum of the internal angles of some figures is (b) (original drawing).
A, 240 b, 180 c, 360 d, uncertain.
(4) Six rice transplanters are 65,438+720 square meters in 0 hour, and three identical rice transplanters can transplant rice (720) square meters in 2 hours. .................................