Page 14 - NUMINO Challenge_B2
P. 14
Problem solving Key Points
1 Numbers that remain the same when their digits Palindromic dates in
are reversed, such as 44, 121, and 8558, are January are 2-digit
called palindromic numbers. If dates are or 3-digit numbers.
expressed in the following way, how many dates
in January and December can be expressed as
palindromic numbers?
June 5th 65 June 23rd 623
2 Digital clocks show time using four digits. Find out Since digital clocks
show time using
how many times the clock shows a palindromic
four digits, 9 am is
time from 9 am to 6 pm. 0900 and 1 pm is
0100.
10 : 01 1001
11Number and Operations
1 Numbers that remain the same when their digits Palindromic dates in
are reversed, such as 44, 121, and 8558, are January are 2-digit
called palindromic numbers. If dates are or 3-digit numbers.
expressed in the following way, how many dates
in January and December can be expressed as
palindromic numbers?
June 5th 65 June 23rd 623
2 Digital clocks show time using four digits. Find out Since digital clocks
show time using
how many times the clock shows a palindromic
four digits, 9 am is
time from 9 am to 6 pm. 0900 and 1 pm is
0100.
10 : 01 1001
11Number and Operations
