Welcome to the Fraction Action Cafe

(Mrs. Payne's 5th Grade Math Classroom)


Grade 5 Module 1 Learning Objective:  Place Value and Decimal Fractions

In Module 1, students’ understanding of the patterns in the base ten system are extended from Grade 4’s work with place value of multi-digit whole numbers and decimals to hundredths to the thousandths place. In Grade 5, students deepen their knowledge through a more generalized understanding of the relationships between and among adjacent places on the place value chart, e.g., 1 tenth times any digit on the place value chart moves it one place value to the right. Toward the module’s end students apply these new understandings as they reason about and perform decimal operations through the hundredths place.

Math Terminology for Module 1

New or Recently Introduced Terms

  • Thousandths (related to place value)
  • Exponents (how many times a number is to be used in a multiplication sentence)
  • Millimeter (a metric unit of length equal to one thousandth of a meter)
  • Equation (statement that two mathematical expressions have the same value, indicated by use of the symbol =; e.g., 12 = 4 x 2 + 4)


Familiar Terms and Symbols

 Centimeter (cm, a unit of measure equal to one hundredth of a meter)

 Tenths (as related to place value)

 Hundredths (as related to place value)

 Place value (the numerical value that a digit has by virtue of its position in a number)

 Base ten units (place value units)

 Digit (a numeral between 0 and 9)

 Standard form (a number written in the format: 135)

 Expanded form (e.g., 100 + 30 + 5 = 135)

 Unit form (e.g., 3.21 = 3 ones 2 tenths 1 hundredth)

 Word form (e.g., one hundred thirty-five)

 Number line (a line marked with numbers at evenly spaced intervals)

 Bundling, making, renaming, changing, regrouping, trading

 Unbundling, breaking, renaming, changing, regrouping, trading

 >, <, = (greater than, less than, equal to)

 Number sentence (e.g., 4 + 3 = 7)