Current location - Training Enrollment Network - Mathematics courses - A cornfield is 25m long and18m wide. How long is this cornfield fence?
A cornfield is 25m long and18m wide. How long is this cornfield fence?
A cornfield is 25m long and18m wide. This cornfield fence is * * *136m.

Expand:

Mathematical problems are generated by counting, calculating, measuring and observing the shape and motion of objects through abstract and logical reasoning. Mathematical problems can be roughly divided into fill-in-the-blank questions, true and false questions, multiple-choice questions, calculation questions, application questions, proof questions, drawing questions, thinking questions, reading questions, regular questions and problem solving. Skillful problem solving depends on the flexible use of the knowledge you usually study.

Oral arithmetic problem

For example: 12+28=40, 5×20= 100, 12y+45y=57y,18y12y =/kloc-0. The purpose is to train pupils' minds and quick reaction ability through mental calculation, oral calculation, quick calculation and clever calculation. For example, it will also appear in the primary school math exam, and it often appears in the junior high school math test paper.

fill-in-the-blank question

For example, if the domain of f(x2) is known, the domain of f(x2- 1) is [-,-1]∩[ 1,].

Right or wrong

1. How to answer the true or false question: the correct answer is marked with "√" in the back bracket, and the wrong answer is marked with "×" in the back bracket. Sometimes options A and B are used.

2. Test center for judging questions: It is nothing more than a few knowledge points (there are many concepts to understand) that are easily confused, and it tests whether the respondents have a thorough understanding of the concepts.

3, problem-solving skills: clear-sighted.

For example, two parallel straight lines are cut by a third straight line, and the internal dislocation angles are equal. (√)