Estimated one fewer box than the correct answer, perhaps from rounding down one too many times.
PRIMARY 4 · MATHEMATICS
Multiplication and Division
Top 5 mistakes
Ranked by how often they appear across 13 MOE-aligned practice questions in our archive.
Confused the number of biscuits per box (8) with the answer, reversing the divisor and quotient.
Multiplied 8 × 8 = 64 instead of dividing, confusing the operation needed when grouping items equally.
Multiplied only the hundreds and units (200 × 4 = 800, 3 × 4 = 12) and forgot to multiply the tens digit (10 × 4 = 40), giving 800 + 12 = 812.
Multiplied the hundreds and tens correctly (200 × 4 = 800, 10 × 4 = 40) but used only the units digit of 3 × 4 = 12, writing 2 instead of 12. This gave 800 + 40 + 2 = 842 instead of 852.
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