First, the understanding of numbers
In this unit, we mainly studied the understanding of numbers, including the concepts and basic properties of integers, decimals, fractions and percentages. We learned how to compare, classify and measure numbers. Integer: We learned how to calculate, read and write integers. Decimal: We learned the basic concepts and reading and writing methods of decimal, and compared the differences between decimal and integer.
Fraction: We studied the concept and basic properties of fractions, as well as the addition, subtraction, multiplication and division of fractions. Percentage: We learned the concept and basic properties of percentage and how to convert percentage into decimal or fraction.
Second, the operation of numbers
In this unit, we mainly studied the addition, subtraction, multiplication and division of numbers, including integer, decimal, fraction and percentage operations. We learned how to add, subtract, multiply and divide fractions with the same denominator and how to add, subtract, multiply and divide decimals. We also learned how to do simple elementary arithmetic.
Third, the common quantity.
In this unit, we mainly studied common quantities, including time, quality, length, area and so on. We learned how to use appropriate units to represent these quantities, and how to compare and measure them.
Fourth, explore the law.
This unit mainly studied the methods of exploring laws, including discovering laws, filling laws and applying laws. We learn how to discover laws and use them to solve practical problems through some interesting examples.
Verbs (short for verb) solve problems.
In this unit, we mainly learned how to solve problems, including problems in life and problems in mathematics. We learned how to analyze problems, find solutions to problems, and implement solutions. We also learned how to use mathematical models to represent and solve practical problems.
Through the study of this unit, we have not only mastered the basic mathematics knowledge and skills, but also improved our logical thinking ability and problem-solving ability. In the future study, we will continue to learn and apply these knowledge and skills to solve more problems.