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Use these like a skill ladder: concept checks first, then rhythm drills, then challenge-style review inside practice and worksheets.

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Exercise library

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L0

  • Identify the bead groups
    L0 abacus-orientation Difficulty 1

    The first step in reading a soroban is understanding the value of the two bead groups on a rod.

  • Name the beam and active position
    L0 abacus-orientation Difficulty 1

    Value depends on contact with the beam, not just on bead position somewhere on the rod.

  • Read the digit seven
    L0 number-reading Difficulty 1

    Read the upper bead first, then add the active lower beads.

  • Read the digit zero
    L0 number-reading Difficulty 1

    On the soroban, an inactive rod shows zero when neither the upper nor lower beads touch the beam.

  • Read the number twenty-four
    L0 place-value Difficulty 2

    Two active lower beads on the tens rod mean 20, and four active lower beads on the ones rod mean 4.

  • Set the number thirty-one
    L0 place-value Difficulty 2

    Place value matters more than the total number of moved beads.

  • Read forty-two
    L0 place-value Difficulty 2

    This strengthens two-rod reading before arithmetic starts adding pressure.

  • Set fifty
    L0 number-setting Difficulty 2

    This helps learners see that zeros still matter because they preserve place value.

  • Bead reading race
    L0 number-reading Difficulty 2

    This is a race-style exercise: the goal is not panic, but faster clean reading of a two-rod number.

L1

  • Set the number four
    L1 number-setting Difficulty 1

    Four is made entirely with lower beads, one point each.

  • Set the number eight
    L1 number-setting Difficulty 1

    Eight is faster to set as 5 + 3 than by trying to count only with lower beads.

  • Add 2 and 3 on one rod
    L1 addition Difficulty 2

    This is a useful first pattern because the result becomes the upper bead alone.

  • Add 1 to 7
    L1 addition Difficulty 2

    Read the existing structure first, then add the smallest new movement possible.

  • Add 4 and 4
    L1 addition Difficulty 2

    Read the final rod as five plus three.

  • Subtract 2 from 8
    L1 subtraction Difficulty 2

    Eight is five plus three. Removing two leaves five plus one.

  • Add three to six
    L1 addition Difficulty 3

    This is a good early direct-addition drill because the value stays on one rod but still changes shape.

  • Subtract three from nine
    L1 subtraction Difficulty 3

    This reinforces that subtraction should still end with a clear rod reading, not just a guessed result.

  • Matching number pairs
    L1 mixed-operations Difficulty 3

    Matching exercises make learners compare structures instead of treating every problem as unrelated.

L2

  • Use a complement to reach five
    L2 complements Difficulty 3

    This is one of the core complements-to-five pairs.

  • Add 3 to 2 using a complement
    L2 complements Difficulty 3

    Complements let you move to a cleaner final shape instead of treating every step as unrelated.

  • Use a complement to reach ten
    L2 complements Difficulty 3

    The 7 and 3 pair is one of the core complements-to-ten patterns.

  • Add 3 to 7
    L2 complements Difficulty 3

    Reading the complement pair first makes the final value immediate.

  • Complement ladder to five
    L2 complements Difficulty 3

    This builds complement recall as a ladder of related pairs instead of isolated facts.

  • Complement ladder to ten
    L2 complements Difficulty 3

    The goal is to make complements-to-ten feel like a rhythm, not a lookup table.

  • Error diagnosis with complements
    L2 complements Difficulty 3

    Error diagnosis builds stronger complement memory because you must judge and repair a wrong statement, not only answer a blank.

L3

  • Mixed two-digit sequence
    L3 mixed-operations Difficulty 3

    The key is holding place value calmly through each step.

  • L3 mixed, sequence columns · 3-4 digits
    L3 mixed operations Difficulty 4

    This authored worksheet now carries the same profile metadata used by generated worksheets, so its label and drill can be certified.

  • Two-digit subtraction check
    L3 mixed-operations Difficulty 3

    Read the value again after subtraction to confirm each place stayed stable.

  • Carry rhythm check
    L3 mixed-operations Difficulty 4

    This drill checks whether a carry is actually landing as a stable new total before the next subtraction begins.

  • Sign-switch relay
    L3 mixed-operations Difficulty 4

    This drill is meant to feel like a relay. Each sign change should pass the full total cleanly to the next step.

L4

  • Multiply 3 by 4
    L4 multiplication Difficulty 4

    Repeated addition is a gentle way to enter multiplication structure.

  • Multiply 4 by 3
    L4 multiplication Difficulty 4

    Seeing the same total through another grouping helps flexibility.

  • Divide 12 by 3
    L4 division Difficulty 4

    Exact division becomes easier when you check it with repeated addition.

  • Divide 12 by 4
    L4 division Difficulty 4

    Try checking the result with 3 + 3 + 3 + 3.

  • Multiply 12 by 3
    L4 multiplication Difficulty 4

    Place-aware multiplication becomes easier when tens and ones are treated as separate partial products.

  • Multiply 14 by 4
    L4 multiplication Difficulty 4

    This drill reinforces that the tens product and ones product must stay aligned before they are combined.

  • Divide 24 by 6
    L4 division Difficulty 4

    Exact division stays stable when you search for the missing factor and check it immediately with multiplication.

  • Divide 36 by 9
    L4 division Difficulty 4

    This drill strengthens exact quotient recognition and checks whether you can trust multiplication facts during division.

  • Six-times table ladder
    L4 multiplication Difficulty 4

    This exercise reinforces one multiplication family so repeated structure starts to feel familiar instead of random.

  • Multiply 23 by 4
    L4 multiplication Difficulty 5

    This is a stronger place-shift drill because the tens product and ones product both matter and must stay aligned.

  • Divide 48 by 6
    L4 division Difficulty 4

    This is a clean division-facts exercise that keeps the factor family visible and exact.

  • Divide 63 by 7
    L4 division Difficulty 5

    This quotient-building exercise is useful because it stretches the exact fact family a little further without introducing remainders.

L5

  • Three-step anzan sequence
    L5 anzan Difficulty 5

    This sequence trains the habit of keeping one stable internal total through both addition and subtraction.

  • Four-step mental balance
    L5 anzan Difficulty 5

    This drill reinforces that the mind should hold the current total, not only the latest operation.

  • Speed rhythm check
    L5 mastery Difficulty 5

    This sequence is meant to test whether speed still preserves the full running total and not just the last place.

  • Error recovery sequence
    L5 mastery Difficulty 5

    This drill is designed to help learners practice a quick internal check after the direction changes.

  • Sign-change anzan
    L5 anzan Difficulty 5

    This anzan drill focuses less on size and more on surviving the sign changes without losing the total.

  • Mental ladder finish
    L5 mastery Difficulty 5

    This drill rewards learners who can keep a full mental ladder instead of only remembering the last move.

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