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PEMDAS & Number Sense

A Khan-style arithmetic-to-pre-algebra foundations track for order of operations, signed numbers, fractions, decimals, ratios, percents, equations, and graph-ready number sense.

This sequenced path uses cited public learning materials plus practice authored for PeerTutor. It does not reproduce provider exercises and is not affiliated with or endorsed by the linked providers.

Start Unit 1Plan an assignment
Course plan

7 units · 7 units, 10-14 weeks foundations cycle · work at your own speed

Start with Unit 1
What you will learn
  • Use order of operations accurately instead of guessing from left to right.
  • Repair number-sense gaps with integers, fractions, decimals, ratios, and percents.
  • Show checks and error corrections so tutors can see the exact misconception.

Your units

Open one unit at a time. Finish it before moving down the list.

  1. 1Arithmetic diagnostic and place-value repairSource -> practice -> tutor · 20 checks · 60 min
    1

    Read

    Use the first cited source.

    Use the source list below, then come back for the checks.

    2

    Practice

    20 checked questions

    Adaptive practice

    One clear check at a time

    20-item skill bank
    Mastery updates from checked workTarget: durable recall
    Loading the next check…
    Signed-out answers are checked without saving an identifier or attempt history.
  2. 2Order of operations and expression readingVideo -> practice -> tutor · 20 checks · 60 min
  3. 3Integers and rational-number senseSource -> practice -> tutor · 20 checks · 60 min
  4. 4Fractions and decimal operationsSource -> practice -> tutor · 20 checks · 60 min
  5. 5Percents, ratios, and unit ratesVideo -> practice -> tutor · 20 checks · 60 min
  6. 6Pre-algebra expressions and one-step equationsSource -> practice -> tutor · 20 checks · 60 min
  7. 7Data displays, coordinate plane, and foundations portfolioSource -> practice -> tutor · 20 checks · 60 min
Books, videos, and sources

Khan Academy materials are free on Khan Academy. PeerTutor is unofficial and is not endorsed by Khan Academy.

Converting percent to decimal and fractionIntroduction to ratiosOrder of operations: PEMDASAlgebra basicsArithmeticPre-algebraMathematics Guidance & ResourcesNYS P-12 Learning Standards by Content AreaIllustrative Mathematics 6-8 MathPrealgebra 2eFlexBook textbooks and concepts
View the full source index
PEMDAS & Number Sense course · PeerTutor