Topic 1 Basic operations on numbers Terms



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September 2017 Basics of Quantitative Skills 2

Topic 1 Basic operations on numbers

Terms:

  1. ordinary (proper, improper, decimal, periodic decimal) fraction – oddiy (to’g’ri, noto’g’ri, o’nli, o’nli davriy) kasr / обыкновенная (правильная, неправильная, десятичная, периодическая десятичная) дробь;

  2. prime (composite) number – tub (murakkab) son/простое (составное) число;

  3. factor – ko’paytuvchi/множитель;

  4. highest (greatest) common divisor (HCD) – eng katta umumiy bo’luvchi (EKUB)/наибольший общий делитель (НОД);

  5. lowest (least) common multiple (LCM) – eng kichik umumiy ko’paytuvchi (EKUK)/наименьший общий кратный (НОК);

  6. remainder – qoldiq/остаток;

  7. to simplify – soddalashtirmoq/упрощать;

  8. multiple (divisor) – karrali (bo’luvchi) / кратное (делитель).

Learning objectives:

  • to have an understanding about the natural, whole, rational (decimal, periodic decimal, fraction) and irrational numbers;

  • to be able to perform arithmetic operations on numbers such as addition, subtraction, multiplication, division, raising to power and extracting a square root;

  • to follow the order of operations in calculating numerical expressions.


Natural numbers – the numbers used for counting. For example: 1, 2, 3, 4, …

Whole numbers – the natural numbers and zero. For example: 0, 1, 2, 3, 4, …

Integer numbers – the whole numbers and the numbers opposite to them. E.g.: …, – 2, – 1, 0, 1, 2, …

Rational numbers – numbers that can be represented as , where b is a non-zero integer.

E.g.: 5, 0, – 45, 2.4343… and – the rational numbers.

Decimal numbers – numbers that contain parts. E.g.: – a decimal number; – a periodic decimal number.

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