1. When some data in daily life don't need to be very accurate, you can use what you have learned (estimate), but try to reduce (error) as much as possible, and the method should be scientific. 2. The operations of squares and squares, cubes and publishers (respectively). The square root and cube root of some numbers can be estimated. 3 Estimating the square root and cube root of some numbers is mainly based on a positive number between other (2) positive numbers. Then its arithmetic square root or cube root must be between these two numbers (square root) or (cube root). A chemical laboratory in Dongfanghong Middle School needs 10 cubic meter of water a day. Now you need to make a cube-shaped water tank to hold water. What do you think is the side length of the water tank? The fourth question is the process of writing.

3 meters

Let the side length of the cube be x, then the meaning of the problem is x 3 =10.

Cubic root of x = 10

Another 8

So x should be >; 2, so it's 3.

Take it.