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Corresponding amount. Correspondence is a mathematical term for a multiplication problem with fractions.

Chinese name. Corresponding amount.

Foreign name. the corresponding amount

Meaning. Multiplication of fractions is an application problem.

Type. Mathematics.

How to do it: Listen to speech.

1 If you like to use both arithmetic and equations, please remember the following song:

First grasp the fractional rate sentence, then set the unit "1", write the relation, and the solution is self-distinct.

Please take a look at the following examples:

1) There are 50 watercolors, there are more crayon drawings than watercolors, how many crayon paintings are there? (2) There are 80 crayon paintings, and there are more crayon drawings than watercolor paintings, how many watercolor paintings are there? According to this sentence, we can see that both questions regard the number of watercolor paintings as the unit "1".

From this we can write the following relation:

Number of watercolors (1+) = number of crayon drawings.

Obviously, the unit "1" in question (1) is known, that is, what is (1+) of 50, and the column formula is 50 (1+).

The unit "1" of question (2) is unknown, so it can be set to x, and then it can be solved according to the relational equation. i.e. x (l+) = 80.

2 If you want to solve the problem by arithmetic, then remember the following song:

First grasp the fraction rate sentence, and then determine the unit "1", distinguish multiplication or division, and the amount rate should correspond.

To put it more concretely, it is the following law:

1) The unit "1" is known and is calculated by multiplication.

Method: Unit "1 The corresponding fraction of the quantity sought = the corresponding fraction of the fraction.

2) The unit "l" is unknown and is calculated by division.

Known Quantity The corresponding fraction of a known quantity = unit "l".

Precautions Listen to voice.

When applying the above rules, students should remember: to do multiplication, to grasp the question, what to ask, use the unit "l" multiplied by its corresponding fraction. To do division, you should grasp the known quantity, and divide the part of the known quantity by the corresponding fraction of this part.

It's a very important thing in mathematics.

1. The corresponding quantity is fractional multiplication.

A mathematical noun for a problem that indicates the corresponding quantity.

2. Example: A is a fraction of B, or A is a fraction of a fraction less than B, or A is a fraction less than B, so that the bright branch B is the unit one, and the corresponding coarse Bu A compared with B is the corresponding quantity.

3. Fraction multiplication application questions, fraction division.

In the application of rock key spike questions, the fraction and percentage application questions contain three quantities: the amount of the unit "1", the corresponding fraction, and the corresponding quantity of the fraction.

1. The corresponding quantity is a mathematical term for the multiplication of fractions, which indicates the corresponding quantity. Take the crack.

2. Example: A is a fraction of B, or A is a fraction more than B, or a fraction of a fraction less than B, so that this is the unit B, and the corresponding A compared with B is the corresponding quantity.

3. Fraction multiplication problems, fraction division problems, fractions, and percentage problems all contain three quantities: the amount of the unit "1", the corresponding fraction, and the corresponding quantity of the fraction.

1. The corresponding quantity is a mathematical pre-academic noun of the fraction multiplication application problem, which indicates the corresponding quantity ascending.

2. Example: A is a fraction of B, or A is a fraction more than B, or A is a fraction less than B, so that this B is the unit one, and the corresponding A compared with B is the corresponding quantity.

3. Fraction multiplication application questions, fraction wisdom and division application problems, fractions and percentage application problems all contain three quantities: the amount of unit "1", the corresponding fraction, and the corresponding quantity of fraction.

An item in one system is equivalent to an item in another: a law. Make a decision for a situationCailing town called for measures.

Interpretation: A relative relationship, the two myopia can be regarded as interchangeable and substituting.

The metaphor of the ruler is in the same situation of one thing as another.

Example: Correspondence Principle – A principle proposed by the Danish physicist Bohr for the transition from the classical theory of atoms to the quantum theory. For a certain situation, it corresponds to the situation of a certain brigade (practice). Example: Corresponding Quantity – A mathematical noun for a multiplication problem with fractions.

In mathematics, "quantity" refers to something that can be distinguished by numbers. Such as length, angle, area, volume, etc.

A unit is the standard quantity that a counting object uses to measure a homogeneous quantity. The standard quantity is called the standard quantity (unit "1"), and the comparison quantity with the standard quantity is called the comparison quantity.

The most basic number is three:

A number" is the unit "1" (standard quantity), "fractions" is the corresponding minute, and "how much" is the corresponding amount (comparative quantity).

The basic quantity relation is:

Unit "1" (standard quantity) Corresponding fraction Corresponding quantity (comparative);

Corresponding Quantity (Comparative Quantity) Unit "1" (Standard Quantity) Corresponding Fraction;

Corresponding Quantity (Comparative Quantity) Corresponding Fraction Unit "1" (Standard Quantity).

When solving problems, the standard quantity is generally determined first, and then the correspondence between the specific quantity and the score in the question is accurately identified, and the corresponding quantity relationship is used to solve it.

Standard Quantity Corresponding Fraction = Comparison Amount, Corresponding Fraction Standard Quantity = Comparison Quantity; Comparison Corresponding Score = Standard Amount, Comparison Amount Standard Quantity = Corresponding Score (Corresponding Score).