Basic properties of scores, homework design

The basic properties of scores are as follows: homework design

Practice goal:

Through practice, students can further understand the basic nature of fractions and use fractions to solve problems. Through practice, we can use the basic properties of fractions to turn a fraction into a fraction with a fixed denominator (or numerator). Through practice, we can understand the close relationship between mathematics and life, encourage students to dare to find problems and cultivate their learning quality of courageously solving problems.

Extended data:

The numerator and denominator of a fraction are multiplied or divided by the same number (except 0) at the same time, and the size of the fraction remains the same. This is called the basic nature of fractions. Fraction originally refers to a part of the whole, or more generally, to any equal number of parts. The form of expression is the ratio of integer A to integer B (whether a false score in multiples of b is a score is controversial).

Fraction indicates the fraction of one number to another, or the ratio of one event to all events. Divide the unit "1" into several parts on average, and the number representing such a part or parts is called a fraction. The numerator is above and the denominator is below.

Early fractions were the reciprocal of integers: ancient symbols representing one-half, one-third, one-quarter and so on. Egyptians used the Egyptian score of 1000 BC. About 4000 years ago, Egyptians separated with slightly different scores.

The Greeks used unit fractions and (post) continuous fractions. The Greek philosopher Pythagoras (about 530 BC) found that two square roots cannot be expressed as part of an integer. Usually this may be wrong, because hippasus of Metapontum is said to have been executed to reveal this fact.