Find the Missing Number — Community Helpers — Grade 1

This is subtraction with the taken-away part left blank. A group of a chef, a nurse and a pilot is shown with the number remaining; the child supplies how many were removed. It nudges a child past one-direction take-away toward seeing subtraction as a relationship — start, change, result — where any one can be the unknown. The people are concrete and the numbers within twenty, so the missing part is always reachable by counting, and a child can prove their answer rather than guess it.

Asking for the taken-away amount rather than the result keeps a child from running a page on autopilot — each row needs real thought about the missing middle. That is precisely why change-unknown problems matter at Grade 1, and why keeping them within twenty is important: the thinking is the work, so the numbers stay small enough to verify by counting the people.

Children who like community helpers take to the puzzle of working backward, and it suits a child ready for a little more than plain take-away. When this feels easy, try find the missing number with ocean life, or find the missing number with thanksgiving. You can also browse every subtraction worksheet or the whole people collection for grade 1 — each sheet prints cleanly in black and white or plays online for free.