The ten-minute arithmetic routine

Of the six KS2 SATs papers, arithmetic is the one where regular short practice reliably moves the score. It tests fluency and nothing else, and fluency is built by frequency, not by length.

Why arithmetic is the paper worth the effort

Maths Paper 1 is 30 minutes and 40 marks, with no word problems and no context. Every mark is a calculation your child either can or cannot do quickly.

That makes it unusually honest. There is no comprehension element, no trick to decode, nothing hidden in the phrasing. If a child can divide 1,000 by 8 reliably, they get the mark.

It also makes it the most improvable of the six papers. Reasoning improves slowly, because it depends on reading and on experience of question types. Arithmetic improves in weeks.

The routine

• Ten minutes, three or four times a week. Not thirty minutes once. The gap between sessions is doing the work — spacing is what moves a fact from effortful to automatic.
• Ten to fifteen questions, mixed. Not ten questions on the same operation. Mixing forces your child to identify what kind of question it is, which is what the real paper demands.
• Mark immediately. A wrong answer corrected within seconds is worth several corrected the next day. Delayed marking lets the wrong method set.
• Redo the wrong ones at the next session. This is the step everyone skips, and it is the one that makes the routine work.

What to actually practise

Times tables to 12×12, in and out of order, until they are instant. Everything else in the paper is slower and more error-prone without them.

The four operations with larger numbers: column addition and subtraction with decimals, long multiplication, long division. These carry 2 marks each and award a method mark, so working must be written down.

Fractions: adding and subtracting with different denominators, multiplying, and fraction-of-an-amount. Percentages of amounts. Order of operations, including brackets — a reliable source of dropped marks because children apply the rules in reading order.

Missing-number questions, where the box is in an awkward place. These look harder than they are and are worth practising specifically.

Making it survivable

Same time each day, attached to something that already happens — after breakfast, before screens. A routine that requires a decision each day will not last a fortnight.

Ten minutes means ten minutes. Stopping while your child is still willing is what makes tomorrow possible. Pushing on to "just finish the page" is how a routine dies.

Track the number right out of ten, not the time taken. Speed comes on its own once accuracy is there, and chasing speed first produces a fast child who gets things wrong.

What progress looks like

In the first fortnight, very little. This is normal and is where most families quit.

By about four weeks, the same questions take noticeably less thinking. By eight, your child stops reaching for a written method on things they can now do in their head.

That shift is the whole point. Time saved on the easy questions is time available for the 2-mark long division at the end, which is where the marks are usually lost.