Download Comparing Numbers

Comparing Numbers
Using <, >, and =
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?
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
Watch this video about comparing
numbers.
Equals Sign =
Here are some examples of when you use the equal sign.
1. 4 = 4
2. 3+3 = 6
3. 4+3 = 5+2
4. 19 = 10+9
5. 45 = 45
6. 70 = 60 + 10
7. 100 = 10 tens
Less Than Sign <
Here are some examples of when you use the less than sign. Remember the
alligator always eats the larger number.
1. 2 < 9
2. 34 < 43
3. 10 + 5 < 10 + 9
4. 11 < 18
5. 309 < 387
6. 12 + 1 < 15
7. 20 + 1 < 20 +6
Greater Than Sign >
Here are some examples of when you use the greater than sign. Remember
the alligator always eats the larger number.
1. 5 > 2
2. 36 > 26
3. 10 + 8 > 10 + 2
4. 16 > 11
5. 298 > 271
6. 13 + 1 > 10
7. 20 + 8 > 20 + 2
Let’s practice together…
Let’s practice together…
Let’s practice together…
Let’s practice together…
Show me what you know…
Show me what you know…
Show me what you know…
Show me what you know…
Show me what you know…
Show me what you know…
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-numbers100.html
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)
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