Analysis: The question is meaningful. Each car needs 6 wheels to assemble, so 6 cars need 6×6=36 wheels. When the number of front wheels is 8, a * * * needs 8+36=44 wheels.

44>40

Therefore, it is impossible to assemble a small train with six carriages.

1. For any two real numbers A and B, their corresponding points A and B can be found on the same axis. If point a is to the right of point b, then A >；; B.

For example, a=3, b= 1, and a is greater than b. That is, a>B (a is greater than B)

2. For any two real numbers A and B, their corresponding points A and B can be found on the same axis. If point a is to the left of point b, then a

Example: a=3, b=5, A is less than B. That is, a < B (a is less than B).

The essence of extended data addition

It is exactly the same thing, that is, the repetition or accumulation of similar things, which is the beginning of numerical operation. Different kinds, such as an apple and an orange, can only be equal to two fruits, so there is a relationship between classification and classification.

Subtraction is the inverse operation of addition; Multiplication is a special form of addition; Division is the inverse operation of multiplication; Power is a simple form of multiplication; The root is the inverse operation of power; Logarithm is the law of finding power term; Derivative is developed from logarithm; Then differential and integral. The development of digital operation is a more special situation and a more repetitive law.