🧠 Grade 3 Math Quiz · Estimation Strategies

Estimation Strategies Practice Questions

70 Grade 3 questions on Estimation Strategies. Choose an answer to get instant feedback and a short explanation — the first 10 are free.

Miss Kashef has 47 stickers. What is a good estimate for the number of stickers?

Explanation: 47 is closest to 50.

You see about 28 children in the playground. A reasonable estimate is ________.

Explanation: 28 is closest to 30.

A pencil is about 18 cm long. What is a good estimate?

Explanation: 18 cm is closest to 20 cm.

Miss Kashef has 62 crayons. About how many does she have?

Explanation: 62 is closest to 60.

There are 83 books on the shelf. A good estimate is ________.

Explanation: 83 is closest to 80.

You have 45 marbles. About how many marbles do you have?

Explanation: 45 rounds to 40 or 50 – 50 is better.

Miss Kashef’s water bottle holds 850 mL. A good estimate is ________.

Explanation: 850 mL is closest to 800 or 900 – 900 is reasonable.

About how many days are in 3 weeks?

Explanation: 3 × 7 = 21 days.

Miss Kashef bought 38 apples. About how many apples?

Explanation: 38 rounds to 40.

A classroom is about 9 metres long. A good estimate is ________.

Explanation: 9 m is close to 10 m.

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