Comparing Numbers

Less thangreater thanand equal to
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Comparing Numbers

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  1. Comparing Numbers

    Slide 1 - Comparing Numbers

    • Using <, >, and =
  2. Comparing Numbers

    Slide 2 - Comparing Numbers

    • It is good to know if one number is larger, smaller, or the same as another number.
    • Which number is larger 17 or 54? Or are they the same?
    • How do we show which is larger?
    • 17 54
  3. Three Signs: We use three signs to compare numbers.  *Think of the less than and greater than signs as alligator mouths.  The alligator always eats the larger number.*

    Slide 3 - Three Signs: We use three signs to compare numbers. *Think of the less than and greater than signs as alligator mouths. The alligator always eats the larger number.*

    • =
    • If two values are equal, we use the "equals" sign
    • example: 3+2 = 5
    • <
    • If one value is smaller than the other, we use the "less than" sign.
    • example: 2 < 7
    • >
    • And if one value is bigger than the other, we use the "greater than" sign
    • example: 9 > 6
  4. Watch this video about comparing numbers.

    Slide 4 - Watch this video about comparing numbers.

  5. Equals Sign =

    Slide 5 - Equals Sign =

    • Here are some examples of when you use the equal sign.
    • 4 = 4
    • 3+3 = 6
    • 4+3 = 5+2
    • 19 = 10+9
    • 45 = 45
    • 70 = 60 + 10
    • 100 = 10 tens
  6. Less Than Sign <

    Slide 6 - Less Than Sign <

    • Here are some examples of when you use the less than sign. Remember the alligator always eats the larger number.
    • 2 < 9
    • 34 < 43
    • 10 + 5 < 10 + 9
    • 11 < 18
    • 309 < 387
    • 12 + 1 < 15
    • 20 + 1 < 20 +6
  7. Greater Than Sign >

    Slide 7 - Greater Than Sign >

    • Here are some examples of when you use the greater than sign. Remember the alligator always eats the larger number.
    • 5 > 2
    • 36 > 26
    • 10 + 8 > 10 + 2
    • 16 > 11
    • 298 > 271
    • 13 + 1 > 10
    • 20 + 8 > 20 + 2
  8. Let’s practice together…

    Slide 8 - Let’s practice together…

    • 11 24
  9. Let’s practice together…

    Slide 9 - Let’s practice together…

    • 15+5 20
  10. Let’s practice together…

    Slide 10 - Let’s practice together…

    • 100 99
  11. Let’s practice together…

    Slide 11 - Let’s practice together…

    • 10 5+5
  12. Show me what you know…

    Slide 12 - Show me what you know…

  13. Show me what you know…

    Slide 13 - Show me what you know…

  14. Show me what you know…

    Slide 14 - Show me what you know…

  15. Show me what you know…

    Slide 15 - Show me what you know…

  16. Show me what you know…

    Slide 16 - Show me what you know…

  17. Show me what you know…

    Slide 17 - Show me what you know…

  18. Extra Online Practice

    Slide 18 - Extra Online Practice

    • Comparing numbers through 10: http://www.mathsisfun.com/algebra/compare-numbers-10.html
    • Comparing numbers through 100: http://www.mathsisfun.com/algebra/compare-numbers-100.html
  19. Next Generation Standard

    Slide 19 - Next Generation Standard

    • M.1.NBT.3    
    • compare two two-digit numbers based on meanings of the tens and ones digits, recording the results of comparisons with the symbols >, =, and <.(CCSS Math.1.NBT.3)
  20. Resources

    Slide 20 - Resources

    • http://www.mathsisfun.com/algebra/compare-numbers-10.html
    • http://www.mathsisfun.com/algebra/compare-numbers-100.html
    • https://www.youtube.com/watch?v=9ZXEL0yuxwM (video: creative commons)
    • http://ipkitten.blogspot.com/2014/12/friday-fantasies_19.html (Slide 1 graphic: creative commons)
    • http://mrsjlbryan.wikispaces.com/Math+Tools (slide 5 graphic: creative commons
    • https://www.flickr.com/photos/evelynsaenz/6689614551/ (Slide 6 and 7 graphics: creative commons