Math: Decimal Multiplication and Division

Suggested Time Frame: 14 Instructional Days

        

Focus TEKS

Estimation (Use throughout unit)

  • 5.3A estimate to determine solutions to mathematical and real-world problems involving addition, subtraction, multiplication, or division; – S RC2

Multiplying and Dividing Decimals (Represent the Operation and Solve Problems)

  • 5.3E solve for products of decimals to the hundredths, including situations involving money, using strategies based on place-value understandings, properties of operations, and the relationship to the multiplication of whole numbers; – R RC2
    • 5.3D represent multiplication of decimals with products to the hundredths using objects and pictorial models, including area models; – S RC2
  • 5.3G solve for quotients of decimals to the hundredths, up to four-digit dividends and two-digit whole number divisors, using strategies and algorithms, including the standard algorithm; – R RC2
    • 5.3F represent quotients of decimals to the hundredths, up to four-digit dividends and two-digit whole number divisors, using objects and pictorial models, including area models; – S RC2
Numeracy TEKS

Multiplication and Division (Whole Numbers) (Suggested: 12 days)

  • 5.3B multiply with fluency a three-digit number by a two-digit number using the standard algorithm; – S RC2
  • 5.3C solve with proficiency for quotients of up to a four-digit dividend by a two-digit divisor using strategies and the standard algorithm; – S RC2

Order of Operations (Suggested: 2 days)

  • 5.4F simplify numerical expressions that do not involve exponents, including up to two levels of grouping; [whole numbers: all four operations; decimals: addition and subtraction only] – R RC1
    • 5.4E describe the meaning of parentheses and brackets in a numeric expression; – S RC1
      Spiral Review TEKS

      Prime and Composite Numbers (Suggested: 2 days)

      • 5.4A identify prime and composite numbers; – S RC1

      Grade 4 Fractions (Suggested: 12 days)

      • Grade 4 Representing Fractions
        • 4.3A represent a fraction a/b as a sum of fractions 1/b, where a and b are whole numbers and b > 0, including when a > b; – S RC1
        • 4.3B decompose a fraction in more than one way into a sum of fractions with the same denominator using concrete and pictorial models and recording results with symbolic representations; – S RC1
      • Grade 4 Equivalence – Fractions
        • 4.3C determine if two given fractions are equivalent using a variety of methods; – S RC1
        • 4.3G represent fractions and decimals to the tenths or hundredths as distances from zero on a number line. – S RC1
      • Grade 4 Comparisons – Fractions
        • 4.3D compare two fractions with different numerators and different denominators and represent the comparison using the symbols >, =, or <; – R RC1
      • Grade 4 Adding and Subtracting – Fractions
        • 4.3E represent and solve addition and subtraction of fractions with equal denominators using objects and pictorial models that build to the number line and properties of operations; – R RC2
        • 4.3F evaluate the reasonableness of sums and differences of fractions using benchmark fractions 0, 1/4, 1/2, 3/4, and 1, referring to the same whole; and – S RC2