What to Do If Your Child Is Falling Behind in Maths

Maths is cumulative. Every topic builds on what came before it. A student who does not understand fractions in Year 4 will struggle with ratios in Year 7 and algebra in Year 8. The gap does not close on its own. It widens, because every new topic that depends on the missing skill adds another layer of confusion.

Year-by-Year Warning Signs

In Year 3 or 4: still counting on fingers for addition and subtraction, cannot recall basic times tables (2s, 5s, 10s), does not understand what a fraction represents. In Year 5 or 6: cannot multiply two-digit numbers reliably, struggles with word problems even when the maths involved is simple, avoids maths homework or takes three times longer than it should. In Year 7 or 8: cannot solve a basic equation like 2x + 3 = 11, confuses negative numbers, cannot convert between fractions, decimals, and percentages.

In Year 9 or 10: fails algebra questions despite studying, cannot graph a linear equation, scores well on some topics but poorly on anything involving prior knowledge. The pattern is the same at every level. The visible problem is this year's content. The actual problem is a gap from one or two years earlier.

The Most Common Gaps and What They Block

Times tables. A student who does not know their times tables fluently cannot do long multiplication, long division, fraction simplification, or factor algebra. Everything slows down. Every calculation takes longer and is more error-prone. This single gap affects every topic from Year 4 onward.

Fractions. Students who do not understand fractions as parts of a whole cannot do ratios, proportions, probability, or algebraic fractions. Place value. A student who does not understand that the 3 in 3,500 represents 3 thousands will struggle with estimation, rounding, and any problem involving large numbers. These three gaps account for the majority of primary school students who are "bad at maths."

How to Diagnose the Gap

Give your child problems from the year level below where they are struggling. If a Year 7 student cannot do Year 7 algebra, give them Year 6 fraction problems. If they can do those, try Year 6 problems involving order of operations. If they struggle, go back further. The gap is wherever they first start making errors or slowing down significantly.

Ask them to explain their thinking out loud. "I multiplied 6 by 7 and got 42" tells you they know the fact. "I counted up from 6 seven times" tells you they do not. "I cross-multiplied" tells you they have a memorised procedure. "I found equivalent fractions by multiplying top and bottom by the same number, because that does not change the value" tells you they understand. The explanation reveals whether the knowledge is solid or surface-level.

Closing the Gap Without Falling Further Behind

The concern parents have is that going back to fill gaps means falling even further behind in current content. In practice, the opposite happens. A Year 7 student who spends four weeks rebuilding fraction skills will suddenly find that ratios, percentages, and probability make sense. The time invested in going back is recovered quickly because current topics become accessible.

Split study time. Spend half on the gap (the underlying skill that is missing) and half on current classwork so the student does not fall behind in class. For example, 15 minutes on times table drills and 15 minutes on this week's homework. Within 6 to 8 weeks, the gap work should be reducing as the foundational skill catches up.

When Outside Help Is Worth It

If the gap is more than one year level below where the student should be, it is difficult to close at home without someone who can diagnose the specific issues and structure the catch-up work. A tutor who assesses the student, identifies the exact gaps, and builds a plan to address them will get results faster than general maths practice.

The earlier you address it, the less work it takes. Closing a one-year gap in Year 5 takes a few months of targeted work. Closing a three-year gap in Year 9 takes significantly longer and competes with increasingly demanding schoolwork. Waiting and hoping it sorts itself out does not work with maths. The gap only grows.