Question

1. there are 12 seals, 4 whales, and 8 dolphins at the aquarium. complete the pictograph to show the data.
2. one trainer feeds the seals and whales, and another trainer feeds the dolphins. how many more animals does the first trainer feed?

mammals at the aquarium
dolphins
seals
whales
each = 2 animals.

Explanation:

For Question 3:

Step1: Calculate dolphin symbols

Each symbol = 2 animals. Number of dolphin symbols: $\frac{8}{2} = 4$

Step2: Calculate seal symbols

Number of seal symbols: $\frac{12}{2} = 6$

Step3: Calculate whale symbols

Number of whale symbols: $\frac{4}{2} = 2$

Step1: Total animals for first trainer

First trainer feeds seals + whales: $12 + 4 = 16$

Step2: Animals for second trainer

Second trainer feeds dolphins: $8$

Step3: Find the difference

Subtract second trainer's count from first: $16 - 8 = 8$

Answer:

| Mammals of the Aquarium |
|--------------------------|
| Dolphins: $\blacksquare\blacksquare\blacksquare\blacksquare$ (4 symbols) |
| Seals: $\blacksquare\blacksquare\blacksquare\blacksquare\blacksquare\blacksquare$ (6 symbols) |
| Whales: $\blacksquare\blacksquare$ (2 symbols) |
Note: $\blacksquare$ represents one symbol equal to 2 animals

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For Question 4: