Divide Decimals

6.NOS.3 · Unit 1 · Lesson 7

Name   Period

Objectives / Objetivos

Content Objective: I can divide with decimals by making the divisor a whole number first.

Language Objective: I can explain my work using the words dividend, divisor, quotient, and equivalent division.

Key Idea / Idea clave

Move the decimal point the same number of places in BOTH the divisor and the dividend; the answer stays the same.

I Notice / Observo

  • What total amount is being divided?
  • What is the size of each pod?

I Wonder / Me pregunto

  • How do you divide when the divisor is a decimal?

Vocabulary / Vocabulario

Term / TérminoDefinition / Definición
Dividend
Dividendo		The number you are splitting up in a division problem.
El número que estás repartiendo en una división.
Divisor
Divisor		The number you split by in a division problem.
El número entre el que divides en una división.
Quotient
Cociente		The answer when you divide.
La respuesta cuando divides.
Decimal division
División decimal		Dividing with decimals. First make the number you divide by a whole number.
Dividir con decimales. Primero haz entero el número entre el que divides.
Equivalent division
División equivalente		Multiplying both numbers by 10 or 100 gives the same answer.
Multiplicar ambos números por 10 o 100 da la misma respuesta.

Practice Preview / Vista previa de práctica

  1. What is 14.4 ÷ 1.2?
    1. 12
    2. 1.2
    3. 120
    4. 0.12
  2. Solve each decimal division problem.
  3. Match each decimal division to its quotient.
  4. Find Derek's Mistake
    1. Step 1: Problem — 7.2 ÷ 0.45
    2. Step 2: Multiply divisor by 10 — 0.45 × 10 = 4.5
    3. Step 3: Multiply dividend by 10 — 7.2 × 10 = 72
    4. Step 4: Divide — 72 ÷ 4.5 = 16

    Which step has the mistake? Explain it and write the correct work.

Reflection / Reflexión

One thing I learned today / Una cosa que aprendí hoy: