Grade 6 Math Unit Assessment: Ratio and Rates (16 Marks)

About This Resource

A 1-page, 16-mark unit assessment in 4 parts — ratios, share in a ratio, rates, explain — with an answer key and score guide.

Overview

Students learn that a ratio compares two quantities and that the order matters. They write ratios in words and with a colon, find equivalent ratios with ratio tables, simplify ratios using the greatest common factor, and use bar models to share an amount in a given ratio. They then learn that a rate compares two different units, find unit rates (price per item, kilometers per hour), and use unit rates to decide which offer is the best buy.

Resource Details

Subject: Math
Topic: Ratio and Rates
Category: Problem Solving
File Type: PDF
File Size: 201.1 KB
Published: 26 Oct 2026
Downloads: 0

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Question Types & Suggested Use

Exit tickets in lessons 1 and 3. Worksheet Parts A–E with the answer key. Unit Assessment (16 marks). Performance task (rubric): "Party Planner" — scale a recipe for a party and choose the best-buy ingredients.

Skills Assessed

Write a ratio in words and with a colon (a:b) and explain why the order matters.
Find equivalent ratios by multiplying or dividing both parts by the same number.
Simplify a ratio using the greatest common factor.
Share an amount in a given ratio using a bar model.
Find a unit rate and use unit rates to compare prices and speeds.

How to Administer

Give at the end of the unit (or as a pre-test before teaching).
Allow about 40 minutes. Students work alone.
Mark with the answer key; use the score guide to decide who needs re-teaching or a challenge.

Differentiation

Support: Use counters or cubes for every ratio question. Challenge: Ratios with three parts (2:3:5). English language learners: Teach the frame: "For every ___ there are ___."

Follow-Up Activities

Ratio Match (12 minutes, Groups of 3–4): Spread the cards face up. Players take turns to find a matching pair and say a sentence: "For every 2 red there are 5 blue."
Best Buy Detective (15 minutes, Pairs): Each pair gets 3 products, each sold in two pack sizes. Find the price for one (unit rate) for each pack.
Human Bar Model (10 minutes, Whole class): Call 5 students. Give 2 a red strip and 3 a blue strip: they are the bar model for 2:3. Give the "total" to the class (e.g. 30 sweets). Students work out one box.

Teacher Tips

Keep the bar model on the board all week: it works for sharing, recipes and scale. Prices use dollars ($) so the pack works in any country; swap in your local currency if you like.