All questions fall into two types:

For example, (1) 2/3 of a number is a number B. First, find the score of 2/3, and ask: Whose 2/3 is 2/3 of a number and A number is "1".

(2) The weight of apples is 2/3 more than that of pears. The characteristic of this question type is "bi", and the quantity "pear weight" after the word bi is "1".

2.( 1) Given the unit "1", find the quantity corresponding to a fraction of this unit and multiply it.

For example, the number A is 2.7, and two-thirds of the number A is the number B. Find the number B. ..

Analysis: The unit "1"A number is known, and the score of B number is 2/3. To find the number b is to find out what is 2/3 of 2.7, using multiplication.

(2) Knowing a fraction of the corresponding quantity, find the quantity in unit "1" and divide it by it.

For example, apples weigh 50 kilograms, which is 2/3 more than pears. How many kilograms of pears are there?

Finding the weight of pears means finding the unit "1". Apple's corresponding score is (1+2/3).

50÷( 1+2/3)。

Note: When using division, the corresponding relationship between quantity and fraction must be achieved.