I can use integers to represent quantities in everyday life, explain what 0 means in each situation, and name the opposite of an integer on the number line.Puedo usar números enteros para representar cantidades de la vida diaria, explicar qué significa 0 en cada situación y nombrar el opuesto de un entero en la recta numérica.
MissionMisión · Harbor WorksPuerto de trabajo
Keep the port running.Mantén el puerto en marcha.
Welcome to Harbor Works! Cranes lift cargo above the dock and divers inspect hulls below the waterline. Every report uses 0 as the starting level, so you write each measurement as an integer.
¡Bienvenidos a Puerto de trabajo! Las grúas levantan la carga sobre el muelle y los buzos revisan los cascos bajo la línea de flotación. Cada informe usa el 0 como nivel de partida, así que escribes cada medida como un entero.
Word bankBanco de palabras 5 words5 palabrasinteger, opposite, negative number, …número entero, opuesto, número negativo, …
- integernúmero entero
- A counting number, its opposite, or 0.Un número para contar, su opuesto o el 0.
- oppositeopuesto
- A number the same distance from 0 as another number, but on the other side of 0.Un número a la misma distancia del 0 que otro número, pero del otro lado del 0.
- negative numbernúmero negativo
- A number less than 0, written with a − sign. It is to the left of 0.Un número menor que 0, escrito con signo −. Está a la izquierda del 0.
- positive numbernúmero positivo
- A number greater than 0. It is to the right of 0.Un número mayor que 0. Está a la derecha del 0.
- number linerecta numérica
- A line where numbers are placed in order, smaller on the left and greater on the right.Una recta donde los números se colocan en orden, los menores a la izquierda y los mayores a la derecha.
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.
- Pick a place where 0 has a clear meaning, like sea level. Write one integer above 0 and its opposite below 0. Use the model to see each distance from 0. Explain what stays the same and what changes.
- Which point is at 7 on the number line?
- Point A
- Point B
- Point C
- Point D
- Start at 6 on a number line and move 4 units to the left. What number do you land on?
- How many units apart are 3 and 11 on a number line?
- 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.
- Badwater Basin is 86 meters below sea level, and sea level is 0. Which integer represents that elevation?
- −86
- −68
- 0
- 86
- In Reykjavik the temperature was −9°C. What is the opposite of −9?
- −18
- −9
- 0
- 9
- What is the opposite of 0?
- A number written −0, which is less than 0
- Every negative number
- Zero has no opposite
- 0
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.
- Which list of integers is ordered from LEAST to GREATEST?
- −8, −3, 0, 5
- −3, −8, 0, 5
- 0, −3, −8, 5
- 5, 0, −3, −8
- Badwater Basin is at −86 meters. Which elevation is FARTHER below sea level than Badwater Basin?
- −120 meters
- −40 meters
- 0 meters
- 86 meters
- Fill in the table
- What is the best next move?
- Start at −7 and move 7 units right.
- Move 7 more units left of −7, to land on −14.
- Say −7 is its own opposite, like 0.
- Mark its opposite: 7 units across 0.
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 integer represents a 3-yard loss when the line of scrimmage is 0?
- −30
- −3
- 0
- 3
- The four plays are −10, 4, −3, and 21. What is the team's net result?
- 12 yards gained
- 12 yards lost
- 18 yards gained
- 38 yards gained
- What does 0 represent in this football situation?
- A play in which nobody touched the ball
- The line of scrimmage, the spot where the series started
- The end zone at the edge of the field
- The number of yards still needed for a first down