Multiplication and Division
The most common mistakes Singapore primary students make in Multiplication and Division, distilled from 72+ MOE-aligned questions across P1, P2, P3, P4. Free practice at every level.
Top 10 mistakes in Multiplication and Division
- #1Partial logic
Wrote only the cookies on ONE plate, not all plates. Total = 3 plates × 2 cookies each = 6.
- #2Misconception
Wrote the number of PLATES instead of the total cookies. We need plates × cookies-per-plate.
- #3Misconception
Added instead of multiplied: 3 + 2 = 5. For equal groups, we multiply: 3 × 2 = 6.
- #4Calc error
Multiplied 2 by 3 to get 6, counting only 2 groups instead of all 4. There are 4 groups, so 4 × 3 = 12.
- #5Misconception
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.
- #6Misconception
4 × 7 = 28, which is not 36. You may have recalled the wrong multiplication fact. Check: 4 × 9 = 36, so 36 ÷ 4 = 9.
- #7Partial logic
4 × 8 = 32, which is 4 short of 36. You found a close multiple but stopped one step too early. 4 × 9 = 36, so the answer is 9.
- #8Calc error
36 ÷ 3 = 12, but the question divides by 4, not 3. Make sure you use the correct divisor. 36 ÷ 4 = 9.
- #9Misconception
You added 6 + 4 + 5 = 15 instead of multiplying. When each level (boxes / packets / biscuits) groups items inside the next level, we multiply.
- #10Partial logic
You found the number of PACKETS (6 boxes × 4 packets = 24) but did not multiply by the 5 biscuits in each packet.
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