--- title: "Comparing and ordering measurements" description: "Compare and order lengths, mass, and capacity and record results using >, <, and =" canonical: https://lightmysky.com/learn/mathematics/comparing-and-ordering-measurements-mt_BFJ-ch_8QU source: https://lightmysky.com/learn/mathematics/comparing-and-ordering-measurements-mt_BFJ-ch_8QU.md retrieved: 2026-10-19 --- > **Agent view.** This is the Markdown twin of the page, for tools and assistants. > When to use this site, and the call that answers each job: https://lightmysky.com/agent-instructions.md > API description (OpenAPI 3.1): https://lightmysky.com/openapi.json · Authentication: https://lightmysky.com/auth.md > Pricing: https://lightmysky.com/pricing.md · Catalog: https://lightmysky.com/llms.txt · Full catalog: https://lightmysky.com/llms-full.txt > Every machine-readable file on this domain: https://lightmysky.com/.well-known/ai-catalog.json > Ask for Markdown with `Accept: text/markdown`, a `.md` address, or `?mode=agent`. # Comparing and ordering measurements Compare and order lengths, mass, and capacity and record results using >, <, and = Subject: Mathematics · Area: Measurement · Ages 6 to 7 Page: https://lightmysky.com/learn/mathematics/comparing-and-ordering-measurements-mt_BFJ-ch_8QU ## Ready when they can - Compare lengths, masses, volumes or capacities recorded in matching units using >, < and = - Order lengths, masses or capacities and identify positions in the ordered list - Use = and identify matching measurements when two measurements are the same ## Lesson: Comparing and ordering measurements **Example.** Compare the same attribute in matching units. In 36, the left digit means 3 tens (30); the right means 6 ones (6). A ten is 10 ones. Compare tens first, then ones if tens match. Use > for greater than and < for less than. The point faces the smaller number; the open side faces the larger: 4 cm < 9 cm. **Example.** Use = when measurements of the same attribute in matching units are equal. Two lengths of 14 cm match: 14 cm = 14 cm. Neither is longer. You can also find which records match a named measurement by checking both their number and unit. **Example.** To find the smallest measurement, compare all the numbers in the same unit. To order them, place the smallest first, then the next, then the largest. Jugs with capacities 3 cups, 6 cups and 9 cups go in that order. Use equal-sized, equally filled measuring cups. **Example.** Check a comparison by reading what its symbol says. Writing 2 cups > 7 cups says 2 is greater than 7. That does not match the numbers. Correct it to 2 cups < 7 cups. For an ordered list, check each neighbouring pair in turn. **Example.** When ordering named objects, keep each name with its measurement. Plants P, Q and R are 2 cm, 6 cm and 10 cm tall. From shortest to tallest, list P, Q, R. To fill a gap in an ordered list, choose a measurement between its neighbours. *(drawing: These volumes are already ordered from smallest to largest. The middle value is 7 ml, not whichever value was listed second before sorting.)* Check attribute and unit: cm is length; g is mass. They cannot be ordered as two lengths. The third digit from the right counts hundreds, groups of 100. Compare hundreds, then tens, then ones. 200 has 2 hundreds; 80 has none, so 200 > 80. Find the largest by comparing all matching-unit values. Check a list for the first neighbouring pair that breaks its stated order. **Recap.** Measure, compare the numbers, then write >, <, or = to show which is bigger, smaller, or the same. ## Practice 18 questions on this page, each with its working shown. ## Needs first - [Choosing measurement units](https://lightmysky.com/learn/mathematics/choosing-measurement-units-mt_DOe893F6gN) - [Comparing and ordering numbers](https://lightmysky.com/learn/mathematics/comparing-and-ordering-numbers-mt_U0waNfD8PB) ## Opens up - [Calculating with measurements](https://lightmysky.com/learn/mathematics/calculating-with-measurements-mt_6oxQPNLHNv)