3rd Grade Math Diagnostic Test aligned with Common Core Standards.

It looks like you've uploaded an image of a 3rd Grade Math Diagnostic Assessment aligned with Common Core Standards. While the full test isn't completely visible, I can help solve and explain the problems that are clearly shown in the image.

Let’s go through each visible question one by one and solve them step-by-step.

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Question 1:

> A zoo has 8 adult elephants, 4 baby elephants, 9 adult giraffes, and 2 baby giraffes. How many animals are there in all?

Step 1: Add up all the animals:
- Adult elephants: 8
- Baby elephants: 4
- Adult giraffes: 9
- Baby giraffes: 2

Total = 8 + 4 + 9 + 2 = 23

Now check the answer choices:
a. 20
b. 3 x 3 = 9 (not relevant)
c. 3 x 3 = 9 (not relevant)
d. 4 x 3 = 12 (not relevant)

Wait — the options seem to be expressions, not numbers. Let's reevaluate.

But actually, looking at the choices:
a. 20
b. 2 x 3 = 6
c. 3 x 3 = 9
d. 4 x 3 = 12

None of these equal 23. That suggests either a typo or misalignment.

Wait — perhaps the question is asking for the correct expression that represents the total number of animals?

But the total is 8 + 4 + 9 + 2 = 23, which isn't represented directly.

Alternatively, maybe the question is misprinted.

But let’s assume the correct answer is 23, and since it's not listed as a choice, perhaps the options are meant to be:

Wait — no, the options are:
a. 20
b. 2 x 3
c. 3 x 3
d. 4 x 3

That doesn’t make sense. Perhaps this is a multiple-choice question where the expression matches the total.

But none do.

Wait — perhaps the question is asking: “How many animals are there in all?” and the answer should be 23, but that's not among the choices.

Alternatively, maybe the question is miswritten.

But let's look again.

Wait — maybe the choices are incorrectly labeled. Or perhaps it's asking for something else.

Alternatively, maybe the question is asking: "Which expression shows the total number of animals?"

But 8 + 4 + 9 + 2 = 23, so unless one of the choices equals 23, none fit.

So likely, the correct answer is not listed, or there's a mistake.

But wait — perhaps the problem is only asking about elephants and giraffes separately?

No, it says "in all".

Conclusion: The total number of animals is 23, but since that’s not an option, this may be an error in the test.

However, if we look closely, the answer choices are:
a. 20
b. 2 × 3
c. 3 × 3
d. 4 × 3

These are all small numbers. So possibly the question is misprinted.

But based on the information, the correct total is 23, so unless there's a typo, the answer isn't listed.

But let's move on.

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Question 2:

> Use the distributive property of multiplication to find the missing number.
> 4 × 3 + 4 × 2 = 4 × ?

Step 1: Apply the distributive property:
> 4 × 3 + 4 × 2 = 4 × (3 + 2) = 4 × 5

So the missing number is 5

Answer: d. 5

✔ Correct Answer: d. 5

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Question 3:

> After a field trip to the zoo, Henry decided to collect turtle stickers. He started off with 25 turtle stickers. Then he bought some more turtle stickers at the store. Now Henry has 95 turtle stickers in all. Which equation, when solved, will show how many turtle stickers Henry bought at the store?

Let’s define:
- Stickers he started with: 25
- Stickers he bought: let’s call it t
- Total now: 95

So:
25 + t = 95

We want to solve for t, so the equation is:

25 + t = 95

Now check the choices:
a. 25 + t = 95 → ✔ This matches
b. t + 95 = 25 → No, that would mean t = -70
c. 25 - t = 25 → t = 0
d. 25 - t = 95 → t = -70

✔ Correct Answer: a. 25 + t = 95

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Question 4:

> What is 459 rounded to the nearest hundred?

To round to the nearest hundred:
- Look at the tens digit: 5 (in 459)
- Since 5 ≥ 5, we round up

So:
- 459 → 500

✔ Answer: 500

(Though the answer choices aren't visible here, 500 is correct.)

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Question 5:

> The school cafeteria sold 425 slices of pepperoni pizza and 291 slices of cheese pizza. How many slices were sold in all?

Add:
425 + 291 = ?

Break it down:
- 425 + 200 = 625
- 625 + 90 = 715
- 715 + 1 = 716

So total = 716

Now check choices:
a. 616
b. 626
c. 716
d. 726

✔ Correct Answer: c. 716

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Question 6:

> Solve: 9 × 80 = ?

Think:
- 9 × 8 = 72
- So 9 × 80 = 720

✔ Answer: 720

(No choices shown, but 720 is correct.)

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Summary of Answers:

| Question | Answer |
|--------|--------|
| 1 | 23 (but not listed; possible error) |
| 2 | d. 5 |
| 3 | a. 25 + t = 95 |
| 4 | 500 |
| 5 | c. 716 |
| 6 | 720 |

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Final Notes:

- This diagnostic test assesses 3rd-grade math skills including:
- Addition and subtraction
- Multiplication and distributive property
- Word problems
- Rounding
- Algebraic thinking (equations)

- The test format includes multiple-choice questions and space to show work, aligning with Common Core standards.

- If you have a specific question or need help with another part of the test, feel free to ask!

Let me know if you'd like a printable version of the answers or explanations for other questions!