1. The problem asks to find which division expression matches the visual model of 0.8 (8 out of 10 parts) divided by a certain number. 2. The expressions given are $0.8 \div 2$, $0.8 \div 3$, $0.8 \div 5$, and $0.8 \div 6$. 3. To understand which matches the visual model, we calculate each division: 4. Calculate $0.8 \div 2$: $$0.8 \div 2 = \frac{0.8}{2} = 0.4$$ 5. Calculate $0.8 \div 3$: $$0.8 \div 3 = \frac{0.8}{3} \approx 0.2667$$ 6. Calculate $0.8 \div 5$: $$0.8 \div 5 = \frac{0.8}{5} = 0.16$$ 7. Calculate $0.8 \div 6$: $$0.8 \div 6 = \frac{0.8}{6} \approx 0.1333$$ 8. The visual model shows 8 out of 10 parts filled, which is $0.8$ total, divided into equal parts. 9. Since the bar is divided into 10 equal parts and 8 are filled, dividing by 2 would split the 0.8 into 2 parts of 0.4 each, which matches the visual model best. 10. Therefore, the expression $0.8 \div 2$ matches the visual model. Final answer: $0.8 \div 2 = 0.4$