one
I can count. 1. Write directly. 1.67+0.33=
2.35-2.3=
0.25×4=
÷0.7=0.2×7.8×0.5=
6×0.4=
0.×8=
×5=
5.4÷0.9=
9.3÷0.03=
0÷2. 1×6.5=
1÷0.2÷0.5=
2. Calculate the following questions.
0.75× 18÷0. 15
1.25×2.5+0.75×2.5
2 1.36÷0.8- 12.93. Solve the equation.
x-52=25
7x= 10.5
17-x=6
9x-3x=78
7.2 \x = 8
2x+x+5 = 32 13(x+5)= 1
5x-27= 18
(3x-7)÷5= 16
Second, I'll fill it out.
1.
Plant trees between two floors separated by meters, and plant * * * trees every 10 meters 1 tree (
) tree. 2.
A road is 40 meters long, and a tree is planted every 8 meters on both sides of the road.
) tree. 3. The distance between the two willows is meters, and it is planned to replant 23 young trees. Every two trees are equally spaced, so the spacing between trees (
) meters. 4.
The circumference of the circular skating rink is meters, and a lamp is installed every 20 meters.
) lights. 5.
On one side of a boulevard, plant a telephone pole every 15 meters from beginning to end, and use 86 telephone poles. The total length of this boulevard (
) meters. 6. The big clock in the square strikes four times at four o'clock and once every six seconds. When it knocks 12, it knocks 12. When it strikes, it needs (
) seconds. Third, I will judge (draw "√" and draw "×" wrongly).
1. Plant trees at one side and both ends of the path. The number of trees planted is more than the spacing 1. (
)2.
Plant trees on one side of the path, not on both ends. The number of trees planted is more than the interval 1. (
)3.
Plant trees at the edge of the circular pond with the same spacing as the trees. (
It takes 3 minutes to saw 3 sections of a piece of wood, and 4 sections can be sawed in 4 minutes. (
) 5. The three cards read 1, 1, 2 respectively. If you draw a card, you will probably get 1. (
Fourth, choose one. 1. A section of highway is meters long, and a plane tree is planted every 9 meters on both sides of the highway, both ends are planted, and a plane tree is planted (
) tree.
a.
b.
c.
D2。
Plant poplars on a circle with a circumference of meters at equal intervals, and the distance between two trees is (
) meters.
a.2
b.4
c.8
d. 123。
A boulevard in the Red Scarf Park is meters long, and there are 4 1 trash cans at the same distance from beginning to end on one side. The distance between every two trash cans (
) meters. a.20
B 19
c.2 1
There is a locust tree on each side of the road, 7 meters apart. Fangfang took the tram for 3 minutes and saw a locust tree on the roadside. The speed of the tram is per minute.
(
) meters.
a.50
b.
c.
D. Uncertainty V. Solving problems. 1.
The distance between the two buildings is 56 meters. How many cedars can be planted every 4 meters?
2. A circular pond has a circumference of meters. How many saplings does it take to plant a willow every 5 meters? 3.
The school should insert a colorful flag every 5 meters on both sides of the 80-meter straight runway. How many colorful flags do you need if you don't plug one end? A round fish pond is 100 meters long. Now there are 25 poplars planted around the pond. How many meters can I plant?
5.
On one side of a road, some new cards were installed every 4 meters, but they were not installed because one end was a pier. Xiaolan counted from beginning to end and counted 42 cards. How long is this road?
Students should plant 8 poplars between two buildings 72 meters apart. If you don't plant at both ends, what is the average distance between every two trees?
7.
A person walks on the path at the same speed. It takes1min to walk from the first tree to the 12 tree. If this person walks for 25 minutes, which tree should he go to? 8. Eight people sit at one table, two tables sit together 12 people, three tables sit together 16 people. 10 How many people can sit in a row of tables? How many tables do 32 people need to get up to sit down?