I can divide with decimals by making the divisor a whole number first.Puedo dividir con decimales convirtiendo primero el divisor en un número entero.
MissionMisión · Robot LabLaboratorio de robots · night shiftturno de noche
Test, measure, improve.Prueba, mide, mejora.
The lab lights drop low and the robots idle. A power surge has jumbled the decimal points on the logs, and only a careful engineer can set each division right again.
Las luces del laboratorio bajan y los robots descansan. Una subida de energía revolvió los puntos decimales de los registros, y solo un ingeniero cuidadoso puede arreglar cada división.
Word bankBanco de palabras 5 words5 palabrasdividend, divisor, quotient, …dividendo, divisor, cociente, …
- dividenddividendo
- The number being divided, inside the division bracket.El número que se divide, dentro de la galera de división.
- divisordivisor
- The number you divide by.El número entre el que divides.
- quotientcociente
- The answer to a division problem.La respuesta de un problema de división.
- equivalent divisiondivisión equivalente
- A division with both numbers multiplied by 10 or 100, which keeps the same quotient.Una división con los dos números multiplicados por 10 o 100, que mantiene el mismo cociente.
- annex a zeroagregar un cero
- Write a zero after the last decimal digit without changing the value.Escribir un cero después del último dígito decimal sin cambiar el valor.
Stage 1 of 5Etapa 1 de 5
Start StrongEmpieza fuerte
Each rung is harder than the last, and the numbers change every time.
Cada peldaño es más difícil que el anterior y los números cambian cada vez.
- 6 fresh problems with new numbers each time (interactive only).
Stage 2 of 5Etapa 2 de 5
Stretch Your ThinkingAmplía tu pensamiento
Plan, solve, then check that your answer makes sense.
Planea, resuelve y revisa que tu respuesta tenga sentido.
- Find Derek's Mistake
- A gas station sells fuel at $3.45 per gallon. A customer pays $27.60 total. How many gallons did the customer buy? Set up the decimal division, show how to convert it to whole-number division, and solve.
- A robot welder has 9.6 meters of wire. Each weld uses 0.12 meter. How many welds can it make?
- A robot’s battery holds 14.7 kilowatt-hours. The robot uses 0.6 kilowatt-hour each hour. For how many hours can it run?
- Which division has the same quotient as 4.5 ÷ 0.15?
- 45 ÷ 15
- 450 ÷ 15
- 4.5 ÷ 15
- 450 ÷ 1.5
- A lab pours 2.4 liters of cleaning fluid into bottles that hold 0.08 liter each. About how many bottles can it fill?
- 30 bottles
- 3 bottles
- 300 bottles
- 0.3 bottles
Stage 3 of 5Etapa 3 de 5
InvestigateInvestiga
Use the model to test an idea. Then check it.
Usa el modelo para probar una idea. Luego compruébala.
- Sort each division by how many places you slide both decimal points to make the divisor a whole number.
- Write a shipment plan that uses a decimal total and a decimal amount in each shipment. Show the decimal division algorithm, explain how the decimal point moves, and check your answer by multiplying.
- 4 fresh problems with new numbers each time (interactive only).
Stage 4 of 5Etapa 4 de 5
Find and FixEncuentra y corrige
Somebody made a mistake. Find the step and fix it.
Alguien cometió un error. Encuentra el paso y corrígelo.
- Hassan solves 7.2 ÷ 0.9.
- Wanjiru solves 4.2 ÷ 0.07.
- Tomás solves 3.64 ÷ 1.4.
- Kiran says 0.5 ÷ 0.25 = 2. Elena says it is 0.2 because dividing makes a number smaller. Who is right?
- Kiran, because 50 ÷ 25 = 2 and 0.25 × 2 = 0.5
- Elena, because the quotient is always less than the dividend
- Neither, because the answer is 20
- Both, because 2 and 0.2 are equal
- What is the best next move?
- Put the quotient's point right above the one in 34.5, then continue.
- Stop at 2 R4, because the division has worked out.
- Ignore the point in 34.5 and finish 345 ÷ 15 as a whole number.
- Slide the point in 15 back to make 1.5 again.
- 1 fresh problem with new numbers each time (interactive only).
Stage 5 of 5Etapa 5 de 5
Prove Your UnderstandingDemuestra tu comprensión
Say how sure you are, solve, then create a problem of your own.
Di qué tan seguro estás, resuelve y luego crea un problema tuyo.
- What is 25.2 ÷ 4.2?
- What is 7 ÷ 0.28?
- What is 0.756 ÷ 0.9?
- 8.4
- 0.084
- 84
- 0.84
- Which is the best estimate of 6.1 ÷ 0.2?
- About 3
- About 30
- About 300
- About 0.3
- A robot arm moves 0.45 meter with each step. How many steps does it take to cover 12.6 meters?
- Create your own problem. Write a Robot Lab story that needs you to divide a decimal by a decimal. Show how you slide both decimal points, solve it, and check it by multiplying. Use the words dividend, divisor, quotient and equivalent division.