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    • ▾5th grade
      • ▾Decimal place value
        • •Decimal place value
        • •Hashi puzzles
        • •Decimals to thousandths
        • •Rounding decimals
      • ▸Multi-digit multiplication and division
        • •Multiplying whole numbers by 10, 100, and 1000
        • •Multiplying and dividing decimals by 10, 100, and 1000
        • •Convert fractions to decimals, 10, 100, or 1000 in the denominator
        • •Multiplication, partial products method
        • •Long division
      • ▸Decimal arithmetic
        • •Decimal arithmetic
        • •Dividing whole numbers to get a decimal
      • ▸Add and subtract fractions
        • •Add and subtract fractions, abstract
        • •Adding and subtracting mixed numbers with regrouping
        • •Add and subtract fractions, word problems
      • ▸Multiply fractions
        • •Multiplication as scaling
        • •Areas and perimeters, fractional side lengths
        • •Multiply fractions, abstract
        • •Multiply fractions, word problems
      • ▸Divide fractions
        • •Understanding fractions as division, word problems
        • •Dividing whole numbers by unit fractions
        • •Dividing unit fractions by whole numbers
        • •Dividing mixed numbers
      • ▸Volume
        • •Volume by counting unit cubes
        • •Volume of right rectangular prisms by multiplying
        • •Volume of composite right rectangular prisms
        • •Volume, word problems
      • ▸Coordinate plane
        • •Plot coordinates
        • •Plot coordinates from word problems
      • ▸Algebraic thinking
        • •Intro to parentheses
        • •Distributive property without variables
        • •Convert between words and arithmetic expressions
        • •Linear equations, tables
      • ▸Measurement and data
        • •Unit conversion
        • •Represent and reason with line plots
      • ▸Properties of shapes
        • •Geometric definitions
        • •Classifying shapes
        • •Classifying triangles
        • •Classifying polygons
        • •Symmetries of regular polygons
        • •Quantifiers
     › 5th grade › Decimal place value

    Rounding decimals

    Round decimals up to thousandths. Should also include some whole number rounding so students can see it’s all part of the same idea. Special attention should be given to rounding up 9s. Here's a good video on that.

    Watch these Khan Academy videos:

    • Rounding decimals word problems
    • Comparing decimal numbers on a number line

    Do these Khan Academy exercises:

    • Round decimals
    • Round decimals challenge
    • Round decimals word problems
    • Round decimals using a number line

    Next, give your students these challenges:

    • 2018 Math Kangaroo Levels 3-4 Problem #23 by STEM4all
    • Thirsty? by NRICH

    Conclude by leading this investigation:

    Round-off Dragon by MathPickle

    5.NBT.A.4: Use place value understanding to round decimals to any place.

    Lessons and practice problems