Final answer:
In summary, we can visualize the comparative quantity of blue and yellow fish with differing bar lengths on a comparison bar. The correct multiplication equations representing the comparison are 4 × 16 = 64 and 16 × 4 = 64.
Step-by-step explanation:
When asked to compare the number of blue fish to yellow fish using a comparison bar and write two multiplication equations, we can visualize the comparison by illustrating two bars of different lengths. The bar representing the blue fish would be four times longer than the bar for the yellow fish, as there are 16 blue fish and only 4 yellow fish. Therefore, if we were to draw this, the blue bar would extend far beyond the yellow bar. To find the multiplication equations that match this context, we can consider the relationships between the numbers of blue and yellow fish. To go from the number of yellow fish to the blue fish, we multiply by 4 (4 × 4 = 16). To find the total number of fish if we have 4 groups of the same number of blue fish, we multiply by 16 (4 × 16 = 64). Thus, the correct multiplication equations that match the scenario are option B (4 × 16 = 64) and option D (16 × 4 = 64).