1. Fill in the blanks (2 points for each question, *** 18 points. )
1, 5500050006 billion 2,8450.25
3、6.596 6.60 4、8 8: 1
5. There are countless cycles 6, 1/5 7, 2 9, 15.
8、 12 1 9、550
Second, the choice (65438+ 0 points per question, ***4 points)
1、(4) 2、(2) 3、(3) 4、(3)
Third, the judgment (65438+ 0 points for each question, ***4 points)
1、× 2、× 3、√ 4、×
Four, calculation (26 points)
1, write the number directly (8 points)
2. Calculation (3 points for each question, *** 12 points)
① 1000 ② 75 ③ 3.8 ④ 1
(Note: process scores 2 points, result 1 minute)
3, solve the equation (3 points per question, ***6 points)
① 140 ② (note: 2 points for the process, and 1 minute for the result)
Five, do the questions as required (9 points)
1, 4 points; Cartography should be standardized.
2, 5 points.
2× 2× 2+3.14× (2 ÷ 2) 2× 3 =11.14 (cubic meter)
Six, only comprehensive formula or equation, can't calculate. (2 points for each question, ***6 points)
1, solution: Let this number be x. 25%x=36×
2、(3.9-7.5÷5)×0.25
3、3. 14×20×90× 100
Seven, (3 points for each question, ***9 points)
1、400÷
2,400+400× or 400× (1+)
3、400× ÷60%
Eight, solve the problem (6 points per question, ***24 points. )
1, 3. 14× (20 ÷ 2) 2 = 3 14 (square meter)
Answer (omitted)
2.3. 14× 2.52× 2 = 39.25 (m3)
545× 39.25 = 21391.25 ≈ 21391(kg)
Answer (omitted)
3. Solution: Set 30 people to plant trees.
90:5= :30
=540
Answer (omitted)
4、( 12-8)÷8=0.5=50%
( 18.5- 12)÷ 12≈54.2%
Answer (omitted)
Nine, 10.
(96 ÷ 3× 1× 2+96) ÷ (3+2) = 33.6 (km/h)
Answer (abbreviated).