Last year's math national primary school students' ability competition. . Sixth grade. . It is the foundation. . Come and have a look. . Column formula. . Tell me the secret again. .

( 1)39/6 1.

Because the sum of the numerator and denominator of the new score is 155( 100+23+32), and the ratio of numerator and denominator is 2: 3, so multiply 155 by 2/5 to get a new numerator, and multiply 155 by 3/5 to get a new denominator, and then subtract 20 respectively.

(2) Is the topic wrong or missing? The new fare is 12 yuan.

(3)23/ 16 means multiplying the duration of 23/ 12 hours by the speed.

What do I mean in mathematics?

Some basic concepts of inverse problem

Oral decimal division

How to write a small class teaching plan in kindergarten?

Ask a math question

What are the contents of "numerical calculation methods" for computer majors?

Composition appreciation

Is it easy to take acca in college? What are the contents of the exam?

How to review the third senior high school entrance examination in mathematics, and what to review first?

Analysis of Mathematical Modeling Competition