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21 days of guided reading practice for little learners.
Ages 4–7 · English · Printable PDF
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Two exercise styles in one generator: fill the missing number in an equation (5 + __ = 12), or complete a counting sequence with any step size, forwards or backwards.
A few things worth knowing before you print a stack of them.
Solving 5 + __ = 12 requires a child to subtract, even though the sign says add. That inverse relationship is the foundation of algebra later on, and it is why these sheets are worth more than their simple appearance suggests.
Most children count forwards fluently long before they can count back. Backwards sequences, especially crossing a ten, expose gaps that forward counting hides entirely.
7 + __ = 12 and __ + 5 = 12 look like variations of one exercise and are not. The first can be answered by counting on from 7, which most children find straightforward. The second resists that, because there is nothing to count on from until you have reasoned backwards. Children who are fluent at one can be stuck at the other, so it is worth printing sheets where the blank sits in each position rather than assuming the skill generalises.
A missing number is an unknown, and solving 7 + __ = 12 is solving an equation. That framing matters more than it sounds: children who meet unknowns as a normal part of arithmetic at six do not experience letters standing for numbers as a rupture at eleven. Saying out loud that the box is a number we do not know yet, and that finding it is the whole job, is worth doing repeatedly.
Many children read = as an instruction meaning write the answer next. Missing-number problems break that reading, because the answer is not at the end. A child who writes 12 in the box of 7 + __ = 12 has read the sign as a prompt rather than as balance, and that misconception will cause trouble for years. This worksheet type surfaces it earlier than almost anything else.
Children who stall on a written blank often solve the same problem instantly when it is spoken — seven and what makes twelve. The gap is in reading the notation, not in the number work. If a child is stuck, read the line aloud before offering any strategy, and watch whether the answer arrives immediately. If it does, the sheet is teaching notation and you should carry on.
Where a child cannot reason backwards to the missing number, drawing the problem as a jump on a number line makes the structure visible: the whole, the part you have, and the gap. The generator has a number line type, and printing both on one page gives you the problem and the tool for it side by side.
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Several exercises per sheet
Combine arithmetic, tracing and a quiz on one page instead of printing three separate worksheets.
Edit every question
Retype any question, replace just one, or delete it — your edits survive when you change the settings.
Yes. Choose the sequence mode and set “Count by” to 2, 5, 10 or any step up to 20.
Yes — switch on “Count backwards” and the sequences will descend.
Up to six, though two or three works best. The first number is never blanked so children always have an anchor.
They teach that arithmetic works in both directions and that the equals sign means balance rather than write the answer here. That second point is the one that pays off later — it is the foundation of reading an equation, and children who miss it struggle with algebra years afterwards.
The generator varies the position across the sheet, including blanks in the first number, the second and the result. That variety is deliberate, because a child fluent with one position is often stuck on another and a sheet with the gap always in the same place hides it.
Yes — it is the groundwork for it. A box standing for an unknown number is exactly what a letter will stand for later, and meeting the idea at six or seven inside ordinary arithmetic makes the notation at secondary school much less of a jump.
Because they have read the equals sign as an instruction to write the answer, so the box is where the answer goes. It is a very common misreading and worth addressing directly: cover the problem and ask what number would make both sides the same.
Addition
Sums in vertical columns or horizontal rows, with carry control.
Subtraction
Take-away problems with optional borrowing and negative results.
Addition & Subtraction
Both operations shuffled together — the way real tests mix them.
Multiplication
Times tables with a focus option — drill one table or mix them all.
Division
Sharing problems built from whole facts, with optional remainders.
Addition & Subtraction Fact Families
Three numbers, four related facts — the inverse relationship made visible.