🧠 Grade 4 Math Quiz · Operations

Estimation Practice Questions

70 Grade 4 questions on Estimation. Choose an answer to get instant feedback and a short explanation — the first 10 are free.

Estimate 456 + 389 to the nearest hundred.

Explanation: 456 ≈ 500, 389 ≈ 400, 500 + 400 = 900.

What is the best estimate for 678 - 234?

Explanation: 678 ≈ 700, 234 ≈ 200, 700 - 200 = 500.

Estimate 1,245 + 678 to the nearest hundred.

Explanation: 1,245 ≈ 1,200, 678 ≈ 700, 1,200 + 700 = 1,900.

Best estimate for 892 - 456:

Explanation: 892 ≈ 900, 456 ≈ 500, 900 - 500 = 400.

Estimate 345 + 567 to the nearest hundred.

Explanation: 345 ≈ 300, 567 ≈ 600, 300 + 600 = 900.

What is a good estimate for 1,987 + 2,345?

Explanation: Both numbers ≈ 2,000, 2,000 + 2,000 = 4,000.

Estimate 789 - 312 to the nearest hundred.

Explanation: 789 ≈ 800, 312 ≈ 300, 800 - 300 = 500.

Best estimate for 567 + 289:

Explanation: 567 ≈ 600, 289 ≈ 300, 600 + 300 = 900.

Estimate 4,567 - 1,234 to the nearest thousand.

Explanation: 4,567 ≈ 5,000, 1,234 ≈ 1,000, 5,000 - 1,000 = 4,000.

What is the best estimate for 678 + 945?

Explanation: 678 ≈ 700, 945 ≈ 900, 700 + 900 = 1,600.

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