Answer :

To solve the equation [tex]182 + 218 - 1[/tex], we can follow these steps:

  1. Add 182 and 218 together:

    [tex]182 + 218 = 400[/tex]

    First, we add these two numbers. You can do this by adding the digits from right to left, carrying over if necessary:

    • Units place: [tex]2 + 8 = 10[/tex], write down 0 and carry over 1.
    • Tens place: [tex]8 + 1 + 1 = 10[/tex], write down 0 and carry over 1.
    • Hundreds place: [tex]1 + 2 + 1 = 4[/tex].

    So, [tex]182 + 218 = 400[/tex].

  2. Subtract 1 from the result:

    [tex]400 - 1 = 399[/tex]

    Simply take away 1 from 400 to get the result.

Therefore, the missing number is [tex]399[/tex].