25.6 + 3.74 – 12.89 = ? Here, aligning decimal points on the abacus (usually fixing the unit rod) is critical. Below is a representative set of 10 questions (abridged from typical full 60-question paper).
Example:
347 × 28 = ? Students must place products correctly on rods (e.g., 347 × 20 = 6,940; then 347 × 8 = 2,776; sum = 9,716). This requires understanding of left-to-right multiplication on the abacus. Division problems are no longer "short division" with 1-digit divisors. Advance 1 introduces 2-digit divisors . soal sempoa advance 1