1. Release tens
8 - 4 = 4; drop 4.
2d - round number
2 visual steps / subtract the round chunk
2. Release ones
6 - 0 = 6; drop 6.
Practice Level 6
A few quick rounds make each dropped digit feel light; borrow is the only thing to keep.
Start Level2 visual steps / subtract the round chunk
8 - 4 = 4; drop 4.
6 - 0 = 6; drop 6.
A few quick rounds make each dropped digit feel light; borrow is the only thing to keep.
Start Level