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Abacus Practice
Level 1 – Easy | Small & Big Friends
LEVEL 1 EASY
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Small & Big Friends
Formula Practice

Master the 4 core Abacus Level 1 formulas — practice at your own pace with auto-generated question papers!

✅ Small Friends Positive (+1 to +4) ✅ Small Friends Negative (−1 to −4) ✅ Big Friends Positive (+1 to +9) ✅ Big Friends Negative (−1 to −9)
📖 Formula Reference Cards
Click any formula chip to jump to that practice section
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Small Friends – Positive

Rule: जब beads कम पड़ें, तो 5 add करो और बाकी घटाओ।
e.g. +4 = +5 −1  |  +3 = +5 −2
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Small Friends – Negative

Rule: जब beads extra हों, तो 5 घटाओ और बाकी add करो।
e.g. −4 = −5 +1  |  −3 = −5 +2
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Big Friends – Positive

Rule: +10 add करो और pair घटाओ।
e.g. +9 = +10−1  |  +6 = +10−4
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Big Friends – Negative

Rule: −10 घटाओ और pair add करो।
e.g. −9 = −10+1  |  −6 = −10+4
✏️ Practice Papers
Formula select करो, questions generate करो, और practice शुरू करो!
📌 Formula याद करो:
+4 = +5 then −1 +3 = +5 then −2 +2 = +5 then −3 +1 = +5 then −4
📌 Formula याद करो:
−4 = −5 then +1 −3 = −5 then +2 −2 = −5 then +3 −1 = −5 then +4
📌 Formula याद करो:
+9 = +10−1 +8 = +10−2 +7 = +10−3 +6 = +10−4 +5 = +10−5 +4 = +10−6 +3 = +10−7 +2 = +10−8 +1 = +10−9
📌 Formula याद करो:
−9 = −10+1 −8 = −10+2 −7 = −10+3 −6 = −10+4 −5 = −10+5 −4 = −10+6 −3 = −10+7 −2 = −10+8 −1 = −10+9