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Number 8

Lecture



Number 8

Number 8

Number 8

created: 2014-09-22
updated: 2026-03-09
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Lectures and tutorial on "Arithmetic"

Terms: Arithmetic

Арифметика начало
Арифметика числа 1 2 3 4 5 6 7 8 9
Number 1
Number 2
Number 3
Number 4
Number 5
Number 6
Number 7
Number 8
Number 9
Number 0
Number 10
Прямой счет
Обратный счет
Count on 1 (addition)
Counting on 1 (subtract 1)
Addition (introduction)
Subtraction (introduction)
Laws of arithmetic
Addition to the column
Division with remainder
Bar Division - explanation and examples
Ranks and Classes Explanation and Examples
The order of arithmetic operations (operations)
Multiply in a column
Decimal Fractions
Decimal multiplication
Decimal Division Explanation and Examples
Decimal Comparison
How to read decimals
Decimals
Subtract Decimals Explanation Examples
Ordinary Shot
Reduction of ordinary fractions
Comparison of ordinary fractions explanation and examples
Mixed Numbers Isolation of the whole part of an ordinary fraction
Addition of ordinary fractions. Common denominator
Subtraction of ordinary fractions explanation and examples
Multiplication of ordinary fractions
Division of common fractions explanation and examples
Finding the fraction by number
Finding the number of its ordinary fraction
Conversion of ordinary fractions to decimal
Periodic fraction
Add and subtract properties
Multiplication and division properties
Digit terms
Mutually inverse numbers. Reciprocal Fractions
Integers
Finding the greatest common divisor (GCD)
The least common multiple of the NOC
Rounding numbers
Decimal rounding. Examples
Interest in Math
Interest actions
Tasks for interest
solution and concentration tasks
Tasks for deposits and discount
Average
Expression simplification
Solving simple equations (positive numbers only)
Solving complex equations (positive numbers only)
Numeric and alphabetic expressions
Scale and Mathematics
Ratio of numbers
Proportions
Problem Solving the Proportion
Signs of divisibility by 2, 4 and 8
Signs of divisibility by 3, 6 and 9
Signs of divisibility by 5,10,25 and 100
Sign of divisibility by 11
Negative numbers Coordinate line
Opposite numbers Coordinates of points on the number axis
Addition of negative numbers
Subtract negative numbers
The absolute value of a number
Multiplication of negative numbers
Division of negative numbers
Coordinate system. Coordinate quarters
How to find and record the coordinates of a point
Rational numbers
Comparison of rational numbers
Whole numbers
What is the power of the number? Exposure to the power of the negative number? Procedure in the examples with degrees
Degree properties
Fraction raising
Formulas of abbreviated multiplication
Square root fractional number
Properties of arithmetic roots
Irrational numbers
Geometric mean
Factorial
Number theory