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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

    Adding and subtracting multi-digit numbers

    Students will learn how to use the add and subtract multi-digit whole numbers using the standard algorithms for addition and subtraction respectively. An application of the standard algorithm for subtraction, is being able to find how long someone lived. Here's an example problem. Students will also solve missing number problems involving the addition or subtraction of multi-digit whole numbers. Here are some sample problems.

    Using place value to add 3-digit numbers: part 2 by Khan Academy

    Do these Khan Academy exercises:

    • Multi-digit subtraction
    • Multi-digit addition

    Next, give your students these challenges:

    • Making Longer, Making Shorter by NRICH
    • The Animals' Sports Day by NRICH

    Conclude by leading this investigation:

    Zome – geometric construction
    by MathPickle

    4.NBT.B.4: Fluently add and subtract multi-digit whole numbers using the standard algorithm.

    Lessons and practice problems