11 = 4 + 7. You added 4 and 7 instead of multiplying. Equal groups always mean multiplication: 4 × 7 = 28.
PRIMARY 2 · MATHEMATICS
Multiplication Tables
Top 5 mistakes
Ranked by how often they appear across 24 MOE-aligned practice questions in our archive.
24 = 4 × 6. You may have used 6 tables instead of 7. Count the tables again — there are 7 tables, so 4 × 7 = 28.
32 = 4 × 8. You may have used 8 tables instead of 7. The question says 7 tables, so 4 × 7 = 28.
This adds 4 + 5 instead of multiplying. '4 packets of 5' means 4 groups of 5, which is multiplication.
This is 3 × 5, but Mei Ling bought 4 packets, not 3. Count the groups carefully.
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