1, 2.5 hectares = () m2, 2300 cm2 = () m2.
8050g = () Kg 160m2 = () square decimeter = () square meter.
2. The product of1.36× 0.2 has () decimal places.
3. The business cycle decimal of11÷ 6 is (), and the one-hundredth is ().
4. If the circumference of an equilateral triangle is one meter, then the length of each side is () meters.
5. When A = 4, B = 0.3, and C = 5, the value of c÷a-b+C is (), and that of c÷a-b is ().
6. Fill in >, 70
2. The two trapeziums of () can be combined into a parallelogram.
A, identical B, equal area C, equal bottom and equal height
Xiao Qiang is one year old, Xiaohong is two years older than Xiao Qiang, and Xiao Qiang is () years younger than Xiaohong in three years.
A, (a-3) years old B, 2 years old C, 5 years old D, (a+3) years old
4. The triangle has an area of S square centimeters, a height of 4 centimeters and a base of () centimeters.
a、2s÷ 4 B、s \u 2 \u 4 C、s \u 4D、4s÷ 2
5, in two identical rectangles, the area of the shadow part ()
Jiayi
A, A-B, A-B C, A = B D, can't judge.
Fourth, be careful. (42 points)
1, oral calculation (6 points)
0.4×0.02= 3.5+7.6= 1.23÷3= 2.4×2.5=
16÷ 1.6= 0.9÷0.0 1= 7÷0.25= 99×0.25=
1.2×0.4+0.4× 1.3= 4×( 1.5+0.25) =
2. Recursive equation calculation (simple and convenient) (6 points)
0. 1 1× 1.8+8.2×0. 1 1 1.9- 1.9×0.9 5.4÷(3.94+0.86)×0.8
3, column vertical calculation (6 points)
2.4×6.5= 5.98÷0.23= 7.8÷2.2=
Decimal representation of business cycle
4, solve the equation (12 points)
x+3.2=7.4 x÷3= 1.4
0. 15x-3.8 = 8.5 2×(x-0.5)= 1.6
5. Calculate the area (the two on the right calculate the shadow area. Unit: cm) (12 minutes)
Five, flexible use (28 points)
1, 32,400 kilograms of rice were harvested in a parallelogram field. It is known that the bottom of the parallel four-sided land is 450m, and the height is120m. How many kilograms of rice is produced per hectare on average?
2. Min Min took 10 yuan to buy stationery, 1.2 yuan each pencil, 0.7 yuan each exercise book, 0.2 yuan each colored paper, Min Min 5 pencils, the rest bought colored paper, and some colored paper?
3. A car travels 80 kilometers in the first two hours, 43.5 kilometers and 44.5 kilometers respectively in the last two hours. How many kilometers does this car average per hour?
Last month, Zhang Ming's parents earned 3000 yuan, and his father's salary was exactly 1.5 times that of his mother. What is his parents' salary? (Equation solving)
Dad wants to tile the living room. If you use a floor tile with a side length of 40 cm, you need 125.
(1) How many tiles with a side length of 50 cm are needed?
(2) Each floor tile with a side length of 40 cm is 16.8 yuan, and the labor cost for paving the ground per square meter is 13.5 yuan. For a floor tile with a side length of 50 cm, the labor cost of laying the floor per square meter per 28 yuan is 12.5 yuan. Which floor tile costs less?