Skill: Identify the number after

Explanation and Free Practice Resources

The learner understands that the number after a given whole number is its immediate successor, exactly one greater, and can identify it from spoken numbers, written numerals, a counting sequence, or a number line within 0–120. This includes interpreting transitions such as 9 to 10 and 99 to 100, while recognizing that the next number is not formed by changing only the final digit; larger-number generalizations and formal successor notation are beyond this scope.

Detailed Explanation: Identify the number after

The number after a number is the number that comes next when you count. It is always one more.

To find the number after 9999:

  1. Start with 9999.
  2. Count forward one number: 99,10099, 100.
  3. The number after 9999 is 100100.

So,

99+1=10099+1=100

Remember: when a number ends in 99, the next number starts a new group of ten. Thus, the number after 9999 is 100100, not 910910.

Learn by doing: Identify the number after

Click a topic below to practice the foundational skills you'll need, learn the steps, or master this skill

Your results

Practice with unlimited practice problems

Number Chart to 100 - Next/Previous Number (one, below 100)


    ?

    Download/Modify Free Grade 1 'Identify the number after' Worksheet

    Print this free 'Identify the number after' worksheet to practice this skill away from the computer. Click 'Modify' to easily customize this worksheet to your exact needs.

    Explore More Grade 1 Math