1–5
Name
Date
Palindromes
A palindrome is a word that is spelled the same forward and backward. Some
examples of palindromes are noon, dad, wow, and radar. Numbers can be
palindromes, too. Some examples are 22, 151, and 7,337. You can use addition
to make your own number palindromes.
Sometimes you have to reverse the
digits and add more than once to
make a number palindrome.
42
24
ⴙ42
66
Reverse the digits.
(Write the number
backward.)
261
Then add.
261
ⴙ162
423
ⴙ324
747
Reverse the digits.
Then add.
534
Reverse the digits
in the sum.
534
ⴙ435
969
Reverse the digits.
Then add.
Then add.
Reverse digits and add until you change each number to a palindrome number.
Copyright © Houghton Mifflin Company. All rights reserved.
1.
47
2.
152
3.
29
4.
361
Now choose your own 2-digit or 3-digit numbers to change into palindrome
numbers. Remember: For some numbers, you may need to reverse digits and
add two or more times before you get a palindrome number.
5.
6.
7.
8.
1–5
Name
Date
Palindromes
A palindrome is a word that is spelled the same forward and backward. Some
examples of palindromes are noon, dad, wow, and radar. Numbers can be
palindromes, too. Some examples are 22, 151, and 7,337. You can use addition
to make your own number palindromes.
Sometimes you have to reverse the
digits and add more than once to
make a number palindrome.
42
24
ⴙ42
66
Reverse the digits.
(Write the number
backward.)
261
Then add.
261
ⴙ162
423
ⴙ324
747
Reverse the digits.
Then add.
534
Reverse the digits
in the sum.
534
ⴙ435
969
Reverse the digits.
Then add.
Then add.
Reverse digits and add until you change each number to a palindrome number.
1.
47
2.
152
152
ⴙ251
ᎏᎏ
403
ⴙ304
ᎏᎏ
707
47
ⴙ74
ᎏ
121
3.
29
4.
361
361
ⴙ163
ᎏᎏ
524
ⴙ425
ᎏᎏ
949
29
ⴙ92
ᎏ
121
Now choose your own 2-digit or 3-digit numbers to change into palindrome
numbers. Remember: For some numbers, you may need to reverse digits and
add two or more times before you get a palindrome number.
Answers will vary depending on numbers chosen.
Check students’ work.
5.
6.
7.
8.