I can use a ratio table to find equivalent ratios.Puedo usar una tabla de razones para hallar razones equivalentes.
MissionMisión · Case FilesExpedientes
Follow the numbers to the truth.Sigue los números hasta la verdad.
Case File 3-3: the lab at Case Files mixes the same formula in bigger and smaller batches. Build ratio tables so every batch matches the original clue.
Expediente 3-3: el laboratorio de Case Files mezcla la misma fórmula en tandas más grandes y más pequeñas. Construye tablas de razones para que cada tanda coincida con la pista original.
Word bankBanco de palabras 4 words4 palabrasratio table, equivalent ratio, scale factor, …tabla de razones, razón equivalente, factor de escala, …
- ratio tabletabla de razones
- A table of equal ratios that shows a pattern.Una tabla de razones iguales que muestra un patrón.
- equivalent ratiorazón equivalente
- Two ratios that mean the same thing, like 1:2 and 2:4.Dos razones que significan lo mismo, como 1:2 y 2:4.
- scale factorfactor de escala
- The number you multiply both parts of a ratio by to get an equal ratio.El número por el que multiplicas ambas partes de una razón para obtener una razón igual.
- patternpatrón
- A rule that numbers follow again and again.Una regla que los números siguen una y otra vez.
Stage 1 of 5Etapa 1 de 5
Get ReadyPrepárate
Wake up what you know, then explore today's model.
Activa lo que sabes y luego explora el modelo de hoy.
- Use the model to write three rows of the ratio table (carriages : passengers) for 3 passengers per carriage. Explain how each new row is related to the first row.
- 6 pencils cost $3.00. What is the price per pencil?
- $0.50
- $0.60
- $2.00
- $18.00
- A rate is a UNIT rate when the second quantity is what number?
- 0
- the larger number
- any whole number
- 1
- A car travels 120 miles on 4 gallons of gas. What is the unit rate in miles per gallon?
- 24 miles per gallon
- 30 miles per gallon
- 116 miles per gallon
- 480 miles per gallon
- 1 fresh problem with new numbers each time (interactive only).
Stage 2 of 5Etapa 2 de 5
Try ItInténtalo
Use the hints when you need them. Every wrong answer tells you why.
Usa las pistas cuando las necesites. Cada respuesta incorrecta te dice por qué.
- A recipe uses 3 eggs for every 5 cups of flour. How many eggs are needed for 15 cups of flour?
- 6
- 9
- 10
- 12
- Which row does NOT belong in a ratio table for 4:5?
- 6:10
- 8:10
- 12:15
- 16:20
- A ratio table shows 3:7, 6:14, and 9:21. What is the next row?
- 10:24
- 12:28
- 12:24
- 15:28
Stage 3 of 5Etapa 3 de 5
On Your OwnPor tu cuenta
Tables, mistakes to find, and problems with a few steps.
Tablas, errores por encontrar y problemas de varios pasos.
- Fill in the table
- In a ratio table, the ratio of sugar to butter is 3:2. If you use 12 cups of sugar, how many cups of butter do you need?
- 6
- 8
- 9
- 10
- A ratio table shows 5:8, 10:16, 15:24. What scale factor was used from the first row to the third row?
- 2
- 3
- 5
- 8
- What is the best next move?
- Subtract 9 from both numbers to get the row 3 : −1.
- Divide only the 12 to get 3 and keep 8, so the row is 3 : 8.
- Find what 12 is divided by to get 3, then divide 8 by it.
- Divide 8 by 12 to find the second number in the row.
Stage 4 of 5Etapa 4 de 5 · OptionalOpcional
Practice MorePractica más
Optional extra practice. Press New numbers for another problem on the same skill.
Práctica extra opcional. Toca Números nuevos para otro problema de la misma habilidad.
- 5 fresh problems with new numbers each time (interactive only).
Stage 5 of 5Etapa 5 de 5
Show What You KnowDemuestra lo que sabes
Show what you learned today. Take your time; you can try again.
Muestra lo que aprendiste hoy. Tómate tu tiempo; puedes intentarlo otra vez.
- One serving uses 3 scoops of berries and 2 cups of yogurt. How many scoops for 20 servings?
- 23
- 30
- 40
- 60
- How many cups of yogurt are needed for 20 servings?
- 20
- 22
- 40
- 60
- Which pair is NOT equivalent to 3:2?
- 5:4
- 6:4
- 9:6
- 30:20