Number

Intl. Baccalaureate Board > Class 1 > Math (Total Videos: 149)

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Chapter 1: Number (101 videos)
1.1: Whole Number
  1. Worksheet: Concept of place value 50 to 100
  2. Place value of a 3 digit number
  3. Addition of one object
  4. Addition of more than one objects
  5. Addition of number 1
  6. Addition of numbers greater than 1
  7. Addition worksheet: Match the column
  8. Addition worksheet: Choose the number
  9. Addition of numbers using place value
  10. How much more a number from another number
  11. Add a 2-digit number and a 1-digit number within 100
  12. Add a 2-digit number and a multiple of 10 within 100
  13. Add a 2-digit number and a 2-digit number within 100
  14. Addition of 3 numbers
  15. Commutative property of addition of numbers
  16. Associative property of addition of numbers
  17. Addition of numbers using properties of addition
  18. Addition by making ten
  19. Addition of numbers by converting into known sums
  20. Subtraction of one object
  21. Subtraction of more than one objects
  22. Subtraction of number 1
  23. Subtraction of numbers greater than 1
  24. Subtraction worksheet: Match the column
  25. Subtraction worksheet: Choose the number
  26. Addition subtraction worksheet: Match the column
  27. Addition subtraction worksheet: Write the number in box
  28. Subtraction of numbers using place value
  29. How much less a number from another number
  30. Construct subtraction equation using given picture
  31. Understand subtraction using addition
  32. Subtraction of a 2-digit number from a 2-digit number
  33. Making 10 and breaking into 10
  34. Identify even and odd numbers up to two digits
  35. Recognize 1 to 9
  36. Recognize 1 2 3
  37. Recognize 4 5 6
  38. Recognize 7 8 9
  39. Recognize 10 11 12
  40. Recognize 13 14 15
  41. Recognize 16 17 18
  42. Recognize 19 20
  43. Recognize 21-25
  44. Recognize 26-30
  45. Recognize 31-35
  46. Recognize 36-40
  47. Recognize 41-45
  48. Recognize 46-50
  49. Recognize 51-55
  50. Recognize 56-60
  51. Recognize 61-65
  52. Recognize 66-70
  53. Recognize 71-75
  54. Recognize 76-80
  55. Recognize 81-85
  56. Recognize 86-90
  57. Recognize 91-95
  58. Recognize 96-100
  59. Compare a 2 digit and a 3 digit number using place value
  60. Ascending order of numbers up to 999
  61. Descending order of numbers up to 999
  62. Ordinal numbers 1st-10th
  63. Practice-Ordinal numbers-1
  64. Practice-Ordinal numbers-2
  65. Practice-Ordinal numbers-3
  66. Ordinal numbers 1st- 20th
  67. Two steps word problems on addition
  68. Fluently add numbers within 100 using place value
  69. Fluently add numbers within 100 using properties of operations
  70. Fluently add numbers within 100 using relation of addition and subtra
  71. Addition of 10 or 100 in a given number
  72. Subtract numbers within 100 using mental maths
  73. Fluently subtract numbers within 100 using place value
  74. Fluently subtract numbers within 100 using relation of addition and s
  75. Subtract 10 or 100 from a given number
  76. Two steps word problems on subtraction
1.2: Addition and Subtraction
  1. Addition of numbers using place value
  2. Addition of 3 numbers
  3. Add a 2-digit number and a 1-digit number within 100
  4. Forward counting
  5. Count ten steps backward from a given number
  6. Composition
  7. Worksheet: Composition
  8. Making 10 and breaking into 10
  9. Round whole numbers to nearest 10 or 100
  10. Understand subtraction using addition
  11. Number in between two numbers
  12. What comes after
  13. Worksheet: before and after
  14. Subtraction of numbers using place value
  15. Subtraction of a 2-digit number from a 2-digit number
  16. Add a 2-digit number and a 2-digit number within 100
1.3: Multiplication and Division
  1. Skip counting by 2
  2. Skip counting by 10
  3. Understand multiplication using addition
  4. Understand multiplication using addition by making rows and columns
  5. Skip counting by 5
  6. Understand division as successive subtraction using equal groups
1.4: Fractions and Decimals
  1. Recognize fraction as part of a whole
  2. Recognize unit fraction
  3. Naming fractions using fraction model