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Chapter 3 Addition and Subtraction

  •  English    16     Public
    Lesson 1 - Unknown numbers, Lesson 2 - Even and odd numbers, Lesson 3 - Adding 3-digit numbers, Lesson 4 - Subtracting up to 3-digit numbers
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  • A (613)
  •  15
  • D (748)
  •  20
  • 707 + 232 – 186 = 753
  •  20
  • smiley: 237 - 162 = 75, heart: 598 + 75 = 673, moon: 791 - 673 = 118
  •  25
  • a) even (odd + odd) b) even (even - even)
  •  20
  • a) 938 b) 1238
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  • a) 260 b) 797
  •  20
  • a) 70 b) 73
  •  20
  • 7
  •  20
  • 800 - 425 = 375 mangoes. 375 - 232 = 143 strawberries
  •  20
  • a) 26, b) 68, c) 57, d) 69, e) 23
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  • a) 38, b) 73, c) 70, d) 95, e) 19
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  • 419
  •  20
  • 908
  •  20
  • odd + 823, 451 - odd, 654 - odd
  •  25
  • 335
  •  20