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Transcript

  • 1. An Introduction toby Tarica Miller
  • 2. What is Subtraction?
    Subtraction is removing some objectsfrom a group. The meaning of5-2=3is “Two objects are taken away from a group of five objects and three objects remain".
  • 3. Subtraction Equations
    Numbers or Objects
    Word Problems
    Word Problem:
    Mrs. Kay, teacher of grade 3 students has 84 gifts for her students. There are 67 students and each received one gift from the teacher. Find the number of gifts remaining with Mrs. Kay.
    Solution:
    Total number of gifts with Laura            =   84
    Number of gifts distributed to students= - 67
    Number of gifts left with Laura                = 14
  • 4. Key Words
    are not take away
    differencehave left fewer how many more
    decreased by less than subtract
    remain tallershorter
    change spent how much more
  • 5. Your Turn!
    Alley had 4 packs of bubble gum she gave 2 away to James. How many packs does Alley have left?
  • 6. If your answer is 2 then you are correct!
  • 7. Subtraction Summary
    Subtraction is simply the taken away of any given number of objects.
    Remember to look for and underline key words when solving word problems. Also, subtraction is the opposite of addition.
    Good Luck!
  • 8. The End