lesson math 5

UNIT 1: Combine /kəm.ˈbɑɪn/ Tổ hợp, Liên hợp Combine Convert /kən'vɜ:(r)t/ Biến đổi, chuyển Convert Denominator /di'nɔmineitə/ Mẫu số Denominator Numerator /´nju:məreitə/ Tử số Numerator Improper fraction /im´prɔpə ´frækʃən/ Phân số không thực (lớn 1) Improper fraction Mixed fraction /mikst 'frækʃən/ Hỗn số Mixed fraction Proper fraction /'prɔpə 'frækʃən/ Phân số thực (bé 1) Proper fraction Whole number /hoʊl ´nʌmbə/ Phần nguyên Whole number Whole number Improper fraction Denominator Numerator Combine Whole number Convert Improper fraction Improper fraction Denominator Whole number Convert Combine Numerator Proper fraction Recalling knowledge You can use either an improper fraction or a mixed fraction to show the same amount Do you remember? • The numerator of a proper fraction is less than its denominator • The numerator of an improper fraction is greater than (or equal to) its denominator Example Lan has two cakes She wants to bring some pieces for her mother We can see that there are one cake and a quarter of a cake Therefore, we have cake + 1414 cake Natural number Fraction ... a proper fraction combined Rule and Remark Reading way: whole number > fraction Example: 1 351 35 : “one and three over five”, or “one and threefifths” • 234234 : “two and three-quarters” •... either an improper fraction or a mixed fraction to present the same amount For example 114 =54 114 =54 , as shown below: UNIT Decimal number /'desiməl nʌmbə/ Số thập phân Decimal number Decimal... point is a decimal part Example: The number 17 .59 1 has parts with the whole number (such as 17), the decimal point, and the decimal part (such as 59 1) Place value: When we write numbers, the position