I can solve real-world problems by deciding whether the question asks how many groups fit or how much is in one group, writing a fraction division equation, and checking the solution by multiplying.Puedo resolver problemas de la vida real decidiendo si la pregunta pide cuántos grupos caben o cuánto hay en un grupo, escribiendo una ecuación de división de fracciones y comprobando la solución multiplicando.
MissionMisión · Robot LabLaboratorio de robots
Test, measure, improve.Prueba, mide, mejora.
The Robot Lab builds every bot from fractions of things: a fraction of a liter, of a meter, of a charge. Decide whether each question asks how many groups fit or how much is in one group, then write the equation and check it.
El Laboratorio de Robots construye cada robot con fracciones de cosas: una fracción de un litro, de un metro, de una carga. Decide si cada pregunta pide cuántos grupos caben o cuánto hay en un grupo, y luego escribe la ecuación y compruébala.
Word bankBanco de palabras 5 words5 palabrasdividend, divisor, model, …dividendo, divisor, modelo, …
- dividenddividendo
- The total amount you are dividing, written first in a division.La cantidad total que divides, escrita primero en una división.
- divisordivisor
- The size of one group (or the number of groups) that you divide by.El tamaño de un grupo (o el número de grupos) entre el que divides.
- modelmodelo
- A picture or math way to show a problem so you can solve it.Un dibujo o forma matemática de mostrar un problema para resolverlo.
- equationecuación
- A math sentence with an equal sign showing both sides are the same.Una oración matemática con un signo igual que muestra que ambos lados son iguales.
- reasonablenessrazonabilidad
- Checking if your answer makes sense.Revisar si tu respuesta tiene sentido.
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.
- A team has 4 1/2 liters of water and each portion is 2/3 liter. How many portions can the team make? Decide whether the question asks how many groups fit or how much is in one group. Write the equation, solve it, check by multiplying, and tell why the answer is reasonable.
- Convert 3 2/5 to an improper fraction.
- 6/5
- 15/5
- 17/5
- 32/5
- What is 2 1/2 ÷ 1/2?
- 1 1/4
- 2 1/4
- 4
- 5
- What is 1 1/2 ÷ 3/4?
- 1 1/8
- 2
- 3/4
- 1/2
- 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 ribbon is 4/5 of a yard long. Each bow uses 1/10 of a yard. Which equation finds how many bows can be made?
- 1/10 ÷ 4/5
- 4/5 ÷ 1/10
- 4/5 × 1/10
- 4/5 + 1/10
- A detective has 1/2 gallon of solution. Each test uses 1/8 gallon. How many tests can be run?
- 1/16
- 1/4
- 4
- 16
- A trail is 3/4 mile long. A jogger runs laps of 1/4 mile each. How many laps does the jogger complete?
- 1/3 lap
- 3 laps
- 3/16 lap
- 4 laps
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.
- Marcus solved 2/3 ÷ 1/4 and got 8/3 = 2 2/3. He says 'That can't be right because I started with less than 1.' Is Marcus's math correct? Is his reasoning correct?
- His math and reasoning are both correct — the answer should be less than 1
- His math is wrong — the answer should be 1/6
- His math is correct (2 2/3), but his reasoning is wrong — dividing by a small fraction gives a larger result
- His math is wrong — the answer should be 8/12
- Spot the Common Mistake
- Agent Torres poured 3/4 gallon of fingerprint dust into a jar, and that filled 1/2 of the jar. How much dust fills the WHOLE jar? (3/4 ÷ 1/2 asks how much is in one whole jar.)
- 3/8 gallon
- 2/3 gallon
- 1 1/2 gallons
- 1 1/4 gallons
- What is the best next move?
- Write 4 ÷ 3/5.
- Write 3/5 × 4.
- Write 3/5 ÷ 4.
- Write 3/5 − 4.
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.
- Which equation matches the problem?
- 1/12 ÷ 5/6 = t
- 5/6 ÷ 1/12 = t
- 5/6 × 1/12 = t
- 5/6 + 1/12 = t
- 5/6 ÷ 1/12 = ?
- 2
- 5/72
- 10
- 12
- Is 10 tests a reasonable answer?
- No — the answer should be less than 1
- Yes — each test uses far less than the total, so the answer should be well above 1
- No — you cannot divide fractions
- Yes — because 10 is a round number