Ages 10–11🧮 MathematicsBeing planted

Ratio (age 10+)

Perform mental calculations including with mixed operations and large numbers, using strategies such as partitioning, compensation, and derived facts

A first look

This shelf is still being planted — the questions are being written and checked. Come back soon. A Skill needs at least 5 checked questions before it opens here.

Question 1 of 3

What is the value of 250 × 3 + 500, and which mental‑math strategy shows how to get it?

Question 2 of 3

What is 6.5 × 4? (Use a mental strategy based on facts you already know.)

Question 3 of 3

What is 45 × 8?

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Practise Ratio (age 10+) free →Parents: set up a family account

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.