Wrote only the cookies on ONE plate, not all plates. Total = 3 plates × 2 cookies each = 6.
PRIMARY 1 · MATHEMATICS
Multiplication and Division
Top 5 mistakes
Ranked by how often they appear across 9 MOE-aligned practice questions in our archive.
Wrote the number of PLATES instead of the total cookies. We need plates × cookies-per-plate.
Added instead of multiplied: 3 + 2 = 5. For equal groups, we multiply: 3 × 2 = 6.
Multiplied 2 by 3 to get 6, counting only 2 groups instead of all 4. There are 4 groups, so 4 × 3 = 12.
Added 4 and 3 to get 7. Multiplication means equal groups put together, not adding the group count to the group size. 4 groups of 3 means 3 + 3 + 3 + 3 = 12.
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