Grade 4 Math Diagnostic Assessment Part 1 worksheet - Free Printable

Let's solve each of the first four problems step by step and explain the reasoning.

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Question 1: Round the number shown below to the nearest 10.

Image Description:
There are 5 full tens rods (each representing 10), so that’s $5 \times 10 = 50$, and then 8 individual units.

So, total number = $50 + 8 = 58$

Now, round 58 to the nearest 10.

- The two nearest tens are 50 and 60.
- Since 58 is closer to 60 than to 50 (because 58 - 50 = 8, and 60 - 58 = 2), we round up.

✔ Answer: B) 60

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Question 2: Find the sum of 1,245 and 2,360.

Add the numbers:

```
1,245
+ 2,360
-------
3,605
```

Check:
- 5 + 0 = 5
- 4 + 6 = 10 → write 0, carry 1
- 2 + 3 + 1 = 6
- 1 + 2 = 3

So, total = 3,605

✔ Answer: J) 3,605

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Question 3: TaLeah and two of her friends each have 20 stretchy bracelets. How many bracelets do they have in all?

- There are 3 people: TaLeah + 2 friends = 3 people
- Each has 20 bracelets
- Total = $3 \times 20 = 60$

✔ Answer: B) 60

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Question 4: Which number sentence is true?

Check each option:

- F) 4 × 20 = 60 → $4 × 20 = 80$ → ✘ False
- G) 4 × 30 = 90 → $4 × 30 = 120$ → ✘ False
- H) 8 × 20 = 100 → $8 × 20 = 160$ → ✘ False
- J) 5 × 30 = 150 → $5 × 30 = 150$ → ✔ True

✔ Answer: J) 5 × 30 = 150

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✔ Final Answers:

1. B
2. J
3. B
4. J

Let me know if you'd like help with more questions!