Multiple choice

If the digit 1 is placed after a two-digit number whose tens' digit is 't' and units' digit is 'u', the new number is

  1. 10t + u + 1

  2. 100t + 10u + 1

  3. 1000t + 10u + 1

  4. t + u + 1

  5. 100t + 10u

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Placing 1 as indicated, shifts the given digits to the left, so that 't' is now the hundreds' digit and 'u' is the tens' digit. Therefore, 100t + 10u + 1. Hence, option (2) is the correct option.