Decompose numbers up to 10 in multiple ways

A number can be split in many ways.

The two parts add to the whole.

Read it: 10 comes apart

8 counters sit in the frame. 2 cells sit empty. A full frame is 10, so those empty cells are the rest of the 10.

1. Look at the 8 counters already in the frame.
2. See the 2 empty cells without counting them one by one.
3. 8 counters and 2 empty cells make 10.

Counting empty cells one by one works, but it is slow, and a skipped cell gives the wrong number.

A full frame is always 10 cells, so whatever is not filled is exactly what is still missing.

10 breaking into 8 and 2 is the same fact as 8 + 2 = 10, seen instead of recited.

10 comes apart into what is filled and what is empty; the empty cells are the rest.

5 + ___ = 10 — 5. A full frame is 10. 5 counters are in it, so 5 cells are empty.