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Second Grade Mathematics Handwritten Report Unit 4 Multiplication

The fourth unit of multiplication in the second-grade mathematics handwritten newspaper is as follows:

The first step is to draw a banner in the middle of the top of the pictorial, and put a suitable background color on the banner.

The second step is to write the title in the drawn banner: "Multiplication Table".

The third step is to draw a border according to the size of the pictorial to make the pictorial more beautiful.

The fourth step is to draw a border below and prepare to write the relevant content of the "Multiplication Table".

The fifth step is to write relevant slogans about the title "Multiplication Table" in the drawn border.

The sixth step is to finally draw the "multiplication table" in the lower right corner, and the handwritten newspaper is ready. It is simple and beautiful.

Extended information:

Multiplication (multiplication) refers to a shortcut for adding the same numbers. The result of this operation is called the product, and "x" is the multiplication sign. From a philosophical perspective, multiplication is the result of qualitative change caused by the quantitative change of addition. Multiplication of integers (including negative numbers), rational numbers (fractions), and real numbers is defined by a systematic generalization of this basic definition.

Multiplication can also be viewed as computing objects arranged in a rectangle (integers) or finding the area of ??a rectangle whose side lengths are given. The area of ??the rectangle does not depend on which side is measured first, which illustrates the commutative property. The product of the two measurements is a new type of measurement, for example, multiplying the lengths of the two sides of a rectangle gives its area, which is the subject of dimensional analysis.

What is multiplication

Multiplication is one of the four arithmetic operations. For example, 4 multiplied by 5 means that 4 is multiplied by 5 times. It can also be said that 5 4s are added in a row.

The ancient Babylonians discovered very early that 1/7 is an infinite decimal and cannot be divided completely. All the numbers in the ancient Babylonian reciprocal table are exact decimals, and they (in base 60) are all finite decimals. When encountering infinite decimals, they will use approximation methods to solve them.

In the development of arithmetic in various civilizations, the creation of multiplication is a very important step. A civilization can develop counting methods and addition and subtraction operations relatively smoothly, but it is not so easy to create a simple and feasible multiplication operation method.

The multiplication vertical calculation used seems simple, but in fact it requires mastering the multiplication table in advance; considering this, this vertical calculation is not perfect. We are about to see what different multiplication methods different civilizations have created during the development of mathematics. Some of them can even completely abandon the multiplication table.