Skill 1.3
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The document provides examples for adding and subtracting fractions with the same denominator. It shows step-by-step work for solving multiple fraction addition and subtraction problems, with the goal of demonstrating how to combine like fractions by adding or subtracting the numerators and keeping the same denominator. Visual representations are included to illustrate fraction concepts such as what fraction is shaded in a diagram.
Skill 1.3
- 1. Skill 1.3 - Add and Subtract Fractions 1/19/2011 Do Now 1) 7 - (-7) You only have 3 minutes so get started 2) (4)(7) 3) 40 / -2
- 2. Skill 1.3 - Add and Subtract Fractions 1/19/2011 Do Now 1) 7 - (-7) You only have 3 minutes so get started 2) (4)(7) 3) 40 / -2
- 4. Mike
- 5. Mike Chip
- 6. Mike Chip Chancz
- 7. Mike Dewayne Chip Chancz
- 8. Mike Dewayne Chip Chancz
- 9. Mike Dewayne Chip Chancz
- 10. Mike Dewayne Raven Chip Chancz
- 11. Mike Dewayne Raven Chip Chancz
- 12. Mike Dewayne Raven Chip Chancz
- 14. How do we get Olivia a fair amount?
- 15. How do we get Olivia a fair amount? Lets use Math!
- 18. 1 4
- 21. 1 5
- 25. 1 20
- 26. = =
- 27. = 1 4 =
- 28. = 1 1 4 5 =
- 29. - = - 1 1 4 5 =
- 30. - = - 1 1 1 4 5 = 20
- 31. Fractions
- 32. Fractions
- 33. Fractions
- 34. Fractions
- 35. Fractions 1 4 €
- 36. Fractions 1 4 €
- 37. Fractions 1 4 = 4 16 €€
- 38. Fractions 1 4 = 4 16 €€
- 39. Fractions 1 4 = = 4 16 64 €€ €
- 40. Fractions 1 4 16 = = 4 16 64 € €€ €
- 41. Fractions
- 42. Fractions
- 43. Fractions
- 44. Fractions 1 9 €
- 45. Fractions
- 46. Fractions 2 9 €
- 47. Fractions 2 9 €
- 48. Fractions 2 9 €
- 49. Fractions 2 9 2 1 + = 9 36 € €
- 50. Fractions 2 9 2 1 + = 9 36 € 8 1 + = 36 36 €
- 51. Fractions 2 9 2 1 + = 9 36 € 8 1 9 + = 36 36 36 €
- 52. Fractions 2 9 2 1 + = 9 36 € 8 1 9 1 + = = 36 36 36 4 €
- 53. Fractions
- 54. Fractions
- 55. Fractions
- 56. Fractions
- 57. Fractions
- 58. What fraction is shaded here?
- 59. What fraction is shaded here?
- 60. Here, I’ll make it easier
- 61. Now, what fraction is shaded here? 1 8 €
- 62. Now, what fraction is shaded here? 1 8 €
- 63. Is that easier? 1 8 €
- 64. Now, let us solve a math problem 1 8 €
- 65. Now, let us solve a math problem 1 8 €
- 66. Now, let us solve a math problem 1 8 €
- 67. Now, let us solve a math problem 1 3 + = 8 16 €€
- 68. Now, let us solve a math problem 1 3 + = 8 16 2 3 + = 16 16 €€ €
- 69. Now, let us solve a math problem 1 3 + = 8 16 2 3 5 + = 16 16 16 €€ € €
- 70. More Fractions
- 71. More Fractions
- 72. More Fractions
- 73. More Fractions
- 74. Fractions - Same Denominator
- 75. Fractions - Same Denominator 1. 4 2 + = 7 7 €
- 76. Fractions - Same Denominator 1. 4 2 6 + = 7 7 7 € €
- 77. Fractions - Same Denominator 1. 4 2 6 + = 7 7 7 4 2 2. + = € 9 9 € €
- 78. Fractions - Same Denominator 1. 4 2 6 + = 7 7 7 4 2 2. + = € 9 9 € 7 5 3. + = € 10 10 €
- 79. Fractions - Same Denominator 1. 4 2 6 + = 7 7 7 4 2 2. + = € 9 9 € 7 5 3. + = € 10 10 7 5 4. − = € 10 10
- 80. Fractions - Same Denominator 1. 4 2 6 + = 7 7 7 4 2 2. + = € 9 9 € 7 5 3. + = € 10 10 7 5 4. − = € 10 10
- 81. Fractions - Same Denominator 1. 4 2 6 5. 2 12 + = + = 7 7 7 13 13 4 2 2. + = € 9 9 € € 7 5 3. + = € 10 10 7 5 4. − = € 10 10
- 82. Fractions - Same Denominator 1. 4 2 6 5. 2 12 + = + = 7 7 7 13 13 4 2 2 12 2. + = 6. − = € 9 9 € € 13 13 7 5 3. + = € 10 10 € 7 5 4. − = € 10 10
- 83. Fractions - Same Denominator 1. 4 2 6 5. 2 12 + = + = 7 7 7 13 13 4 2 2 12 2. + = 6. − = € 9 9 € € 13 13 7 5 14 4 3. + = 7. − = € 10 10 € 50 50 7 5 4. − = € 10 10 €
- 84. Fractions - Same Denominator 1. 4 2 6 5. 2 12 + = + = 7 7 7 13 13 4 2 2 12 2. + = 6. − = € 9 9 € € 13 13 7 5 14 4 3. + = 7. − = € 10 10 € 50 50 7 5 12 13 4. − = 8. + = € 10 10 € 25 25
- 85. Fractions - Same Denominator 1. 4 2 6 5. 2 12 + = + = 7 7 7 13 13 4 2 6 2 12 2. + = 6. − = € 9 9 € 9 € 13 13 7 5 14 4 3. + = 7. − = € 10 10 € € 50 50 7 5 12 13 4. − = 8. + = € 10 10 € 25 25
- 86. Fractions - Same Denominator 1. 4 2 6 5. 2 12 + = + = 7 7 7 13 13 4 2 6 2 2 12 2. + = 6. − = € 9 9 € 9 3€ 13 13 7 5 14 4 3. + = 7. − = € 10 10 € € € 50 50 7 5 12 13 4. − = 8. + = € 10 10 € 25 25
- 87. Fractions - Same Denominator 1. 4 2 6 5. 2 12 + = + = 7 7 7 13 13 4 2 6 2 2 12 2. + = 6. − = € 9 9 € 9 3€ 13 13 7 5 12 14 4 3. + = 7. − = € 10 10 10 € € € 50 50 7 5 12 13 4. − = 8. + = € 10 10 € € 25 25
- 88. Fractions - Same Denominator 1. 4 2 6 5. 2 12 + = + = 7 7 7 13 13 4 2 6 2 2 12 2. + = 6. − = € 9 9 € 9 3€ 13 13 7 5 12 6 14 4 3. + = 7. − = € 10 10 10 € € 5€ 50 50 7 5 12 13 4. − = 8. + = € 10 10 € € € 25 25
- 89. Fractions - Same Denominator 1. 4 2 6 5. 2 12 + = + = 7 7 7 13 13 4 2 6 2 2 12 2. + = 6. − = € 9 9 € 9 3€ 13 13 7 5 12 6 14 4 3. + = 7. − = € 10 10 10 € € 5€ 50 50 7 5 2 12 13 4. − = 8. + = € 10 10 10 € € € 25 25
- 90. Fractions - Same Denominator 1. 4 2 6 5. 2 12 + = + = 7 7 7 13 13 4 2 6 2 2 12 2. + = 6. − = € 9 9 € 9 3€ 13 13 7 5 12 6 14 4 3. + = 7. − = € 10 10 10 € € 5€ 50 50 7 5 2 1 12 13 4. − = 8. + = € 10 10 10 € € 5€ 25 25
- 91. Fractions - Same Denominator 1. 4 2 6 5. 2 12 14 + = + = 7 7 7 13 13 13 4 2 6 2 2 12 2. + = 6. − = € 9 9 € 9 3€ 13€ 13 7 5 12 6 14 4 3. + = 7. − = € 10 10 10 € € 5€ 50 50 7 5 2 1 12 13 4. − = 8. + = € 10 10 10 € € 5€ 25 25
- 92. Fractions - Same Denominator 1. 4 2 6 5. 2 12 14 + = + = 7 7 7 13 13 13 4 2 6 2 2 12 −10 2. + = 6. − = € 9 9 € 9 3€ 13€ 13 13 7 5 12 6 14 4 3. + = 7. − = € 10 10 10 € € 5€ 50 50 € 7 5 2 1 12 13 4. − = 8. + = € 10 10 10 € € 5€ 25 25
- 93. Fractions - Same Denominator 1. 4 2 6 5. 2 12 14 + = + = 7 7 7 13 13 13 4 2 6 2 2 12 −10 2. + = 6. − = € 9 9 € 9 3€ 13€ 13 13 7 5 12 6 14 4 10 3. + = 7. − = € 10 10 10 € € 5€ 50 50 € 50 7 5 2 1 12 13 4. − = 8. + = € 10 10 10 € € 5€ 25 25 €
- 94. Fractions - Same Denominator 1. 4 2 6 5. 2 12 14 + = + = 7 7 7 13 13 13 4 2 6 2 2 12 −10 2. + = 6. − = € 9 9 € 9 3€ 13€ 13 13 7 5 12 6 14 4 10 1 3. + = 7. − = € 10 10 10 € € 5€ 50 50 € 50 5 7 5 2 1 12 13 4. − = 8. + = € 10 10 10 € € 5€ 25 25 € €
- 95. Fractions - Same Denominator 1. 4 2 6 5. 2 12 14 + = + = 7 7 7 13 13 13 4 2 6 2 2 12 −10 2. + = 6. − = € 9 9 € 9 3€ 13€ 13 13 7 5 12 6 14 4 10 1 3. + = 7. − = € 10 10 10 € € 5€ 50 50 € 50 5 7 5 2 1 12 13 25 4. − = 8. + = € 10 10 10 € € 5€ 25 25 € 25 €
- 96. Fractions - Same Denominator 1. 4 2 6 5. 2 12 14 + = + = 7 7 7 13 13 13 4 2 6 2 2 12 −10 2. + = 6. − = € 9 9 € 9 3€ 13€ 13 13 7 5 12 6 14 4 10 1 3. + = 7. − = € 10 10 10 € € 5€ 50 50 € 50 5 7 5 2 1 12 13 25 4. − = 8. + = 1 € 10 10 10 € € 5€ 25 25 € 25 €
- 97. Fractions - Different Denominators 1 2 - = 7 9
- 98. Fractions - Different Denominators 1 x9 2 - = 7 x9 9
- 99. Fractions - Different Denominators 1 x9 2 x7 - = 7 x9 9 x7
- 100. Fractions - Different Denominators 1 x9 2 x7 - = 7 x9 9 x7 9 - 63
- 101. Fractions - Different Denominators 1 x9 2 x7 - = 7 x9 9 x7 9 14 - 63 63
- 102. Fractions - Different Denominators 1 x9 2 x7 - = 7 x9 9 x7 9 14 - = 63 63
- 103. Fractions - Different Denominators 1 x9 2 x7 - = 7 x9 9 x7 9 14 -5 - = 63 63 63
- 104. Fractions - Different Denominators 1 x9 2 x7 - = 7 x9 9 x7 9 14 -5 - = 63 63 63
- 105. Fractions - Different Denominators 7 2 - = 9 6
- 106. Fractions - Different Denominators 7 x2 2 - = 9 x2 6
- 107. Fractions - Different Denominators 7 x2 2 x3 - = 9 x2 6 x3
- 108. Fractions - Different Denominators 7 x2 2 x3 - = 9 x2 6 x3 14 - 18
- 109. Fractions - Different Denominators 7 x2 2 x3 - = 9 x2 6 x3 14 6 - 18 18
- 110. Fractions - Different Denominators 7 x2 2 x3 - = 9 x2 6 x3 14 6 8 - = 18 18 18
- 111. Fractions - Different Denominators 7 x2 2 x3 - = 9 x2 6 x3 14 6 8 ÷2 - = 18 18 18 ÷ 2
- 112. Fractions - Different Denominators 7 x2 2 x3 - = 9 x2 6 x3 14 6 8 ÷2 4 - = = 18 18 18 ÷ 2 9
- 113. Fractions - Different Denominators 7 x2 2 x3 - = 9 x2 6 x3 14 6 8 ÷2 4 - = = 18 18 18 ÷ 2 9
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- #27: Did we change the area at all as we cut up the square?\n
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- #35: Did we change the area at all as we cut up the square?\n
- #36: How do we turn 2/9 into /36?\n
- #37: How do we turn 2/9 into /36?\n
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- #52: Discuss with a friend or neighbor or the inside of your own head what fraction is shaded here. (Lots of kids suggest 1/9.)\n
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- #54: Discuss with a friend or neighbor or the inside of your own head what fraction is shaded here.\n
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