# 4th Grade Module 1 Terminology

• Terminology

New or Recently Introduced Terms

§   Ten thousands, hundred thousands (as places on the place value chart)

§   One millions, ten millions, hundred millions (as places on the place value chart)

§   Algorithm

§   Variable

Familiar Terms and Symbols

§   Difference (answer to a subtraction problem)

§   Rounding (approximating the value of a given number)

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

§   Digit (a numeral between 0 and 9)

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

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

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

§   Tape diagram (bar diagram)

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

§   Bundling, making, renaming, changing, exchanging, regrouping, trading (e.g. exchanging 10 ones for 1 ten)

§   Unbundling, breaking, renaming, changing, regrouping, trading (e.g. exchanging 1 ten for 10 ones)

§   =, <, > (equal, less than, greater than)

§   Number sentence (e.g., 4 + 3 = 7)