Third grade math skills

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D. Estimate sums

  1. 1
    Estimate sums by rounding: up to 1,000
  2. 2
    Estimate sums using compatible numbers
  3. 3
    Estimate sums by rounding: word problems

E. Estimate differences

  1. 1
    Estimate differences by rounding: up to 1,000
  2. 2
    Estimate differences using compatible numbers
  3. 3
    Estimate differences by rounding: word problems

L. Addition properties

  1. 1
    Properties of addition
  2. 2
    Complete the equation using properties of addition
  3. 3
    Add using properties
  4. 4
    Even or odd: addition patterns

M. Skip-counting

  1. 1
    Skip-count
  2. 2
    Skip-counting sequences
  3. 3
    Skip-counting puzzles

KK. Compare fractions with like denominators

  1. 1
    Compare fractions with like denominators using models
  2. 2
    Graph and compare fractions with like denominators on number lines
  3. 3
    Compare fractions with like denominators

LL. Compare fractions with like numerators

  1. 1
    Compare fractions with like numerators using models
  2. 2
    Graph and compare fractions with like numerators on number lines
  3. 3
    Compare fractions with like numerators

NN. Order fractions

  1. 1
    Graph and order fractions on number lines
  2. 2
    Order fractions with like denominators
  3. 3
    Order fractions with like numerators
  4. 4
    Order fractions

RR. Lines and angles

  1. 1
    Lines, line segments, and rays
  2. 2
    Angles greater than, less than, or equal to a right angle
  3. 3
    Parallel, perpendicular, and intersecting lines

UU. Read and write times

  1. 1
    Match clocks and times
  2. 2
    Match analog and digital clocks
  3. 3
    Read clocks and write times
  4. 4
    A.M. or P.M.
  5. 5
    Identify times written in words