Counting and numeration

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    Chapter 1 Counting and numeration ( 20 videos)  (Practice Test)

      1.1: The numbers 10 000 to 99 999
      Read, write 6 digit numbers in numerals and words
    1. Read, write 6 digit numbers in numerals and words
      1.2: Seven digit numbers
      Read, write 10 digit numbers in numerals and words
    1. Read, write 10 digit numbers in numerals and words
      23 views
      1.3: Addition to 9999 and beyond (Practice Test)
      Vertically add 4-digit numbers with carrying
    1. Vertically add 4-digit numbers with carrying
      2. Horizontally add 4-digit numbers with carrying
    2. Horizontally add 4-digit numbers with carrying
      3. Add numbers of complexity and arbitrary size by standard algorithm
    3. Add numbers of complexity and arbitrary size by standard algorithm
      1.4: Subtraction of numbers
      Subtract numbers within 1000 using place value
    1. Subtract numbers within 1000 using place value
      1.5: Multiplication of numbers
      Multiply 1-digit whole numbers by multiples of 10 using place value
    1. Multiply 1-digit whole numbers by multiples of 10 using place value
      2. Multiply 1-digit whole numbers by multiples of 10 using properties of operations
    2. Multiply 1-digit whole numbers by multiples of 10 using properties of
      2 views
      3. Multiply numbers by 10, 100 and 1000
    3. Multiply numbers by 10, 100 and 1000
      1.6: Multiplying 2-digit numbers by 2-digit numbers
      Multiply 2-digit numbers with 2-digit numbers using place value
    1. Multiply 2-digit numbers with 2-digit numbers using place value
      1.7: Multiples and factors of whole numbers
      Factors and multiples of numbers
    1. Factors and multiples of numbers
      1.8: Multiplication by 2 and 3 digits
      Multiply 5 digit numbers by 3 digit numbers using place value
    1. Multiply 5 digit numbers by 3 digit numbers using place value
      1.9: Division of numbers (Practice Test)
      Divide 2-digit number by 1-digit number
    1. Divide 2-digit number by 1-digit number
      2. Divide numbers with 1-digit number using place value for zero remainder
    2. Divide numbers with 1-digit number using place value for zero remaind
      6 views
      3. Divide numbers with 1-digit number using place value for non-zero remainder
    3. Divide numbers with 1-digit number using place value for non-zero rem
      4. Divide numbers with 1-digit number using area model for zero remainder
    4. Divide numbers with 1-digit number using area model for zero remainder
      5. Divide numbers with 1-digit number using area model for non-zero remainder
    5. Divide numbers with 1-digit number using area model for non-zero rema
      6. Divide numbers with 1-digit number using big 7 method for zero remainder
    6. Divide numbers with 1-digit number using big 7 method for zero remain
      7. Divide numbers with 1-digit number using big 7 method for non-zero remainder
    7. Divide numbers with 1-digit number using big 7 method for non-zero re
      1.10: Divide whole numbers by a 2 digit divisor
      Divide 4 digit numbers by 2 digit numbers
    1. Divide 4 digit numbers by 2 digit numbers