Module 1

TOPIC C Rounding Multi-Digit Whole Numbers 6 LESSONS: 10-15

Students name multi-digit numbers in unit form in different ways by using smaller units (e.g., 245,000 as 24 ten thousands 5 thousands or 245 thousands), and they find 1 more or 1 less of a given unit in preparation for rounding on a vertical number line. Students round four-digit, five-digit, and six-digit numbers to the nearest thousand, ten thousand, and hundred thousand. They determine an appropriate rounding strategy to make useful estimates for a given context.

TOPIC B Place Value and Comparison within 1,000,000 5 Lessons: 5-9

Students name the place value units of ten thousand, hundred thousand, and million. They recognize the multiplicative relationship between place value units—the value of a digit in one place is ten times as much as the value of the same digit in the place to its right. Students write and compare numbers with up to 6 digits in standard, expanded, word, and unit forms.

Key Questions for Topic A Lessons 1-4:

Students identify, represent, and interpret multiplicative comparisons in patterns, tape diagrams, multiplication equations, measurements, and units of money. They describe the relationship between quantities as times as much as or use other language as applicable to a given context (e.g., times as many as, times as long as, times as heavy as). Students use multiplication or division to find an unknown quantity in a comparison.

• How can you describe a multiplication relationship between numbers?
• How can multiplication equations and tape diagrams represent times as many situations?

Class/Homework Assignments