5.5 Patrones entre valores posicionales y operaciones con decimales

Unit Goals

  • Students build from place value understanding in grade 4 to recognize that in a multi-digit number, a digit in one place represents 10 times as much as it represents in the place to its right and $\frac{1}{10}$ of what it represents in the place to its left. They use this place value understanding to round, compare, order, add, subtract, multiply, and divide decimals.

Section A Goals

  • Compare, round and order decimals through the thousandths place based on the value of the digits in each place.
  • Read, write, and represent decimals to the thousandths place, including in expanded form.

Section B Goals

  • Add and subtract decimals to the hundredths using strategies based on place value.

Section C Goals

  • Multiply decimals with products resulting in the hundredths using place value reasoning and properties of operations.

Section D Goals

  • Divide decimals with quotients resulting in the hundredths using place value reasoning and properties of operations.
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Glossary Entries

  • área
    El número de unidades cuadradas que cubren una figura plana sin dejar espacios ni superponerse.
  • cubo unitario
    Un cubo con lados que tienen 1 unidad de largo. Se usa para medir volumen.
  • prisma rectangular
    Una figura sólida que tiene seis caras y todas son rectángulos.
  • unidad cúbica
    Un cubo unitario con longitudes de lado que son unidades de medida estándar. Se usa para medir volumen.
  • volumen
    El número de cubos unitarios que llenan una figura sólida sin dejar espacios ni superponerse.