Stage 1 · Unit 16 / 30 · Numbers & Operations
Join and split
Switch between joining and splitting to see how two parts and a whole belong together.
★ 0 / 9 · 0/3 steps done
▶ Start · Step 1Switch between joining and splitting to see how two parts and a whole belong together.
★ 0 / 9 · 0/3 steps done
▶ Start · Step 1