All announcements and mathematical activity in my Telegram: https://t.me/mathmsu Registration for the mathematics course with Andrey Pavlikov: https://mnlp.cc/mini?domain=mathmsu&id=2 VK group: https://vk.com/hitman_math Tik-Tok: / hitman_math My Instagram: / andreypavlikov_math Courses in higher mathematics: https://mathstudy.online/highmath Homework for the 5th grade mathematics course according to the textbook by N.Ya. Vilenkin: https://forms.gle/SquX2qwY255nzVms8 Time codes: 0:00 The entire video in 18 seconds 0:18 Let's talk about the origins 0:55 What you need to know by the end of elementary school 1:22 What will be in this video 1:48 How to measure the necessary indicators 2:29 Why this is so important 3:01 Vilenkin's textbook and homework 3:54 Designation of natural numbers 5:48 Segment. Length of a segment. Triangle 7:41 Plane. Straight line. Ray 8:43 Scales and coordinates 10:02 Less than or greater than 11:42 Addition of natural numbers and its properties 13:26 Subtraction 14:49 Numerical and letter expressions 15:36 Letter notation of the properties of addition and subtraction 16:49 Equation 18:26 Multiplication of natural numbers and its properties 19:43 Division 21:50 Division with remainder 22:58 Simplifying expressions 24:33 Order of operations 25:48 Power of a number. Square and cube of a number 28:02 Formulas 28:41 Area. Formula for the area of ​​a rectangle 30:26 Units of area measurement 32:00 Rectangular parallelepiped 33:55 Volumes. Volume of a rectangular parallelepiped 35:14 Circumference and circle 37:24 Fractions. Common fractions 38:04 Comparison of fractions 39:49 Proper and improper fractions 40:57 Addition and subtraction of fractions with the same denominators 41:56 Division and fractions 45:19 Mixed numbers 48:02 Addition and subtraction of mixed numbers 51:33 Decimal notation of fractional numbers 53:46 Comparison of decimal fractions 55:17 Addition and subtraction of decimal fractions 58:15 Approximate values ​​of numbers. Rounding off numbers 1:00:55 Multiplying decimal fractions by natural numbers 1:02:57 Dividing decimal fractions by natural numbers 1:05:19 Multiplying decimal fractions 1:06:55 Dividing by a decimal fraction 1:08:52 Arithmetic mean 1:09:17 Microcalculator 1:09:36 Percentages 1:10:44 Angle. Right and straight angles. Drawing triangle 1:12:09 Measuring angles. Protractor 1:13:13 Circle diagrams 1:14:28 The concept of a set 1:16:31 General part of sets. Union of sets 1:19:48 True or false 1:20:28 Mathematics is understanding what we do 1:21:18 PS #Mathematics #5th grade #Vilenkin School Textbook Vilenkin Useful skills Reading Writing Counting Natural numbers Segment Triangle Plane Line Ray Scale Coordinates Less More Addition Properties of addition Subtraction Properties of subtraction Numeric expressions Letter expressions Equation Multiplication Properties of multiplication Division Division with remainder Order of operations Power of a number Area Units of area measurement Rectangular parallelepiped Volume Units of volume measurement Circumference Circle Common fractions Comparison of fractions Proper fractions Improper fractions Addition of fractions Subtraction of fractions Mixed numbers Addition of mixed numbers Subtraction of mixed numbers Decimal fractions Comparison of decimal fractions Addition of decimal fractions Subtracting decimals Approximate numbers Rounding numbers Multiplying decimals Dividing decimals Meaning Percentages Angle Right angle Straight angle Pie charts Sets Set operations