Ages 9–10🧮 Mathematics9 verified questions on this shelf

Mental addition and subtraction (age 9+)

Add and subtract numbers mentally with increasingly large numbers, using place-value knowledge and derived facts

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Question 1 of 3

If you start at 3,200 and count up until you reach 10,000, how much must you add to 3,200?

Question 2 of 3

Using the near‑double strategy, what is 6,700 + 6,800?

Question 3 of 3

What is 4,700 + 4,800?

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A free account keeps practising Mental addition and subtraction (age 9+) with 9 verified questions, tracks the Skill as it blooms, and connects a real teacher when you want one. Every student account needs a parent's email first.

Skill names and descriptions include the Marble Skill Taxonomy © Generative Spark, Inc. (withmarble.com), licensed under ODbL 1.0 (database) and CC BY-SA 4.0 (content). Practice questions are GlowGrades's own, each checked by independent verifiers that must agree before a child ever sees it.