October 17 2017

# Welcome to Math!

• Module 5 packet
• spiral notebook
• pencil
• Chromebook

### Warm-Up:

Count by 4s and 8s

### 5.1: Dividing Whole Numbers

Learning Target: Students will be able to fluently divide multi-digit numbers using the standard algorithm.

### Engage:

There are 10,845 books in a library. If 45 books can fit on a shelf, how many shelves are needed?

• In this problem, which number is the divisor? The dividend? How could we estimate the quotient?

### Explore:

Round each number to the tens, hundreds, thousands, ten thousands, and hundred thousands place:

• 256,341
• 968,398
• 1,245,172
• 2,045,917

### Explain:

Example 2, p. 109:

• What does the remainder mean in this problem?
• Which value represents the dividend? Which represents the divisor?
• Suppose Callie packs 10 books in each box. Will she have any books left over? How do you know?

### Elaborate:

What steps should be used when dividing large numbers?

Guided Practice:

• In a problem like 20 ÷ 5, which number goes inside the division house? What is this called? Which one goes outside? What is the name for this?

### Important Understandings:

• You can use estimation to predict the approximate quotient of multi-digit whole numbers.
• Use long division to find exact quotients. Copy down these steps:

• Quotients sometimes include remainders “left over,” which can be written with an R or as a fraction.

### Homework:

Expected & Accelerated:

1. Finish dashboard assignments.

(Switch name cards for next class.)

Posted October 17, 2017 by missnichols in category Math, Miss Nichols' posts