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    • ▾4th grade
      • ▾Place value of whole numbers
        • •Place value of multi-digit whole numbers
        • •Adding and subtracting multi-digit numbers
        • •Multiply and divide by 10
        • •Represent a number using base ten blocks, units, tens, and hundreds
        • •Convert between written forms of numbers
        • •Round whole numbers
        • •Estimating sums and differences by rounding
        • •Estimating products by rounding
      • ▸Multiplication and division
        • •Multiplying one-digit numbers by 10, 100, and 1000
        • •Multiplying one-digit numbers by multiples of 10, 100, and 1000
        • •Multiplying 10s
        • •Multiplication
        • •Quotients and remainders
        • •Pattern in the units digit of multiples
        • •Solve multiplication and division word problems
        • •Multi-step word problems
      • ▸Factors, multiples, and patterns
        • •Factors and multiples
        • •Divisibility tests
        • •Prime and composite numbers
        • •Number patterns
      • ▸Equivalent fractions and comparing fractions
        • •Equivalent fractions
        • •37 trick
        • •Compare fractions with unlike numerators, denominators, or both
      • ▸Fraction arithmetic
        • •Round fractions
        • •Add and subtract fractions with like denominators
        • •Add fractions with denominators of 10 or 100
        • •Multiply fractions by whole numbers
      • ▸Understand decimals
        • •Represent decimal numbers using base ten blocks
        • •Compare decimals to hundredths
      • ▸Geometry
        • •Intro to parallel and perpendicular lines
        • •Lines of symmetry
        • •Rotational symmetry
        • •Intro to angles
        • •Measuring and drawing angles
        • •Coterminal angles
        • •Naming angles
        • •Adjacent angles and the additive property of angles
      • ▸Units of measurement
        • •Converting larger units of volume to smaller ones
        • •Converting larger units of length to smaller ones
        • •Converting larger units of time to smaller ones
        • •Word problems involving measures
     › 4th grade › Place value of whole numbers

    Convert between written forms of numbers

    Convert between numbers, word form, and expanded form for multi-digit numbers. Compare them too.

    Watch these Khan Academy videos:

    • Comparing multi-digit whole numbers word problems
    • Writing a number in standard form
    • Finding place value
    • Writing a number in expanded form
    • Comparing whole number place values

    Do these Khan Academy exercises:

    • Compare multi-digit numbers word problems
    • Write numbers in written form
    • Identify value of a digit
    • Compare multi-digit numbers
    • Write whole numbers in expanded form
    • Place value tables
    • Compare numbers: place value challenge
    • Write whole numbers in different forms

    Next, give your students these challenges:

    • 2020 Math Kangaroo Levels 1-2 Problem #21 by STEM4all
    • Halving by NRICH

    Conclude by leading this investigation:

    Taipei 101 Foundations (multiplication, proof)
    by MathPickle

    4.NBT.A.2: Read and write multi-digit whole numbers using base-ten numerals, number names, and expanded form. Compare two multi-digit numbers based on meanings of the digits in each place, using >, =, and < symbols to record the results of comparisons.

    Lessons and practice problems