Thinking a larger denominator means a larger piece
Why it happens: When the same whole is split into more equal parts, each part becomes smaller.
Fix it: Compare fractions using the same whole and draw equal parts if needed.
Understand common Year 5 fractions, decimals and percentages mistakes, why they happen and how to fix them with short practice checks.
These are common ways children can become stuck on this type of question. Use the short check after each one to make sure the correction is understood.
Why it happens: When the same whole is split into more equal parts, each part becomes smaller.
Fix it: Compare fractions using the same whole and draw equal parts if needed.
Why it happens: Fractions such as halves, thirds and quarters must describe equal parts of one whole.
Fix it: Check that every part is the same size before naming the fraction.
Why it happens: Equivalent fractions must represent the same amount even when the numbers change.
Fix it: Multiply or divide numerator and denominator by the same non-zero number.