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Playing with 
Numbers
1-Digit Numbers
From 1 to 9
Total: 9 numbers
2-Digit Numbers
From 10 to 99
Total: 90 numbers
3-Digit Numbers
From 100 to 999
Total: 900 numbers
4-Digit Numbers
From 1000 to 9999
Total: 9000 numbers
Digit Sum Fun!
When you add up the digits in a number, you get the digit sum. Some numbers have the 
same digit sum even though they look different!
Examples with Digit Sum 14:
6 + 8 = 14
1 + 7 + 6 = 14
5 + 4 + 5 = 14
Pretty Palindromes!
A palindrome is a number that reads the same forwards and backwards. They're like 
number mirrors!
Reverse-and-Add Magic
Try this fun trick: Take any 2-digit number, add it to its reverse, and see if you get a 
palindrome!
01
Start with a number
Pick any 2-digit number like 
34
02
Reverse it
34 becomes 43
03
Add them together
34 + 43 = 77 (It's a 
palindrome!)
66
Reads the same both 
ways!
848
Still the same forwards 
and backwards!
1111
Perfect palindrome 
pattern!
Read More
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