Round & adjust (compensation)
Make friendly numbers, then fix the change.
Grades 2–4
Mental Math
Learn a strategy, drill with flashcards, then race a speed sheet — same feel as spelling practice, built for number fluency.
LearnFlashcards50-in-5 sheets
Break numbers apart
Add tens and ones separately, then combine.
Grades 1–3
Multiplication facts
Build automatic recall for 0–12.
Grades 3–5
Division (no remainder)
How many equal groups fit?
Grades 3–4
Division with remainders
Groups plus what is left over.
Grades 4–5