Grade 6 · Maths · Lessons
The ratio table
📋table✖️multiply➗divide🔗same mix
The ratio table.The big ideaEvery column is the same mix. Do the same to both rows: multiply or divide, never add.
How it works
Every column is the same mix. Do the same to both rows: multiply or divide, never add.
One bracelet has 3 green and 6 white beads. For 4 bracelets: 4 × 3 = 12 green and 4 × 6 = 24 white.
Use a column you know to fill the gap.
Example 1: Multiply
- One bracelet has 3 green and 6 white beads.
- For 4 bracelets multiply both by 4: 3 × 4 = 12 and 6 × 4 = 24.
- That is 12 green and 24 white.
Example 2: Divide
- A sticker page has 9 dog and 3 cat stickers.
- For 1/3 of a page divide both by 3: 9 ÷ 3 = 3 and 3 ÷ 3 = 1.
- That is 3 dog and 1 cat.
Example 3: Find the gap
- 24 adult and 42 child tickets sell each day.
- Divide both by 6 to get 4 adult for every 7 child.
- Multiply by 8 for another column: 32 and 56.
Words to know
- ratio table
- A table of equal ratios.
- equivalent ratios
- Ratios that make the same comparison.
Watch out
- Never add to both rows: multiply or divide.
- Check every column makes the same ratio.
- Use the column that's easiest.
Try it
- A recipe uses 2 cups flour for 3 cups milk. How much milk for 6 cups of flour?
- 3 red to 5 blue. How many blue for 9 red?
- 12 to 8 simplified?
- Do you add or multiply to scale a ratio?
Answers: 1. 9 · 2. 15 · 3. 3 to 2 · 4. multiply or divide
For grown-upsDouble and triple a recipe and see the ratio table grow.