Grade 2 Missing Numbers Worksheets — Blanks Within 100
By Grade 2 the blanks get bigger: 34 + ___ = 71 cannot be solved on fingers, so children must reach for place value and inverse operations. That shift — from counting to reasoning — is exactly what missing number practice at this grade is for. Five skills each have their own page and their own three levels: Missing Addend, Missing Subtrahend, Fact Families and Balance the Equation all work within 100, and Missing Factor introduces the blank in a multiplication — kept to the 2, 5 and 10 tables, which is as far as Grade 2 goes. Every change you make below updates the worksheet instantly, and the shareable link brings back the identical sheet for fair re-tests.
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Missing Numbers · Grade 2
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Grade 2 · 2 pages · A4More Grade 2 missing numbers skills
Each one generates a different kind of question, with its own three levels and answer key.
- Missing AddendFind the number that finishes an addition, like 6 + __ = 13.
- Missing SubtrahendFind how much was taken away, like 15 − __ = 8.
- Missing FactorFind the factor that makes the product, like 6 × __ = 42.
- Fact FamiliesUse one fact you already know to write the fact that goes with it.
- Balance the EquationMake both sides the same, like 6 + 4 = __ + 3.
What each level generates
Grade 2 missing addend — the exact skill behind each difficulty setting, straight from the generator.
- Level 1No regrouping
- Level 2With regrouping
- Level 3Three numbers
Grade levels follow the progression common to most English-language curricula — not one specific national curriculum. Every level shows exactly what it generates, so you can check the fit with your own program. See the full scope & sequence →
What Grade 2 missing number work covers
Most Grade 2 curricula expect one- and two-step unknowns in addition and subtraction within 100. Missing Addend and Missing Subtrahend generate two-digit blanks such as 34 + ___ = 71 or 82 − ___ = 47, where the efficient move is the inverse operation — 71 − 34 — rather than counting on by ones. Each runs No regrouping, then With regrouping, before its third level moves the blank again.
A useful benchmark: by the second half of the year, a typical Grade 2 student solves a two-digit missing-number problem in under a minute by rewriting it as the inverse, and can explain why 71 − 34 finds the blank. Keep the Grade 1 Missing Addend and Missing Subtrahend sheets in rotation as a warm-up so within-20 facts stay automatic underneath the bigger work.
Using these sheets for real progress
Run 12–15 problems per session and require the substitution check: put the answer back in the blank and verify the equation holds. Children who check by substitution catch their own place-value slips — the 71 − 34 = 43 kind — before you do. If your student is still solving 34 + ___ = 71 by counting up in ones, that is the signal to teach the inverse move explicitly, not to add more problems.
For a fortnightly progress check, keep one sheet's link and re-run it as an identical re-test, then compare time and errors like for like. Pick A4 or US Letter to match your printer, and switch on the easy-read font for children who lose their place on dense pages — fewer, larger problems often fixes "careless" errors that were really visual ones.
Frequently asked questions
▸What do missing number problems look like in Grade 2?
Blanks in addition and subtraction within 100 — for example 34 + ___ = 71 or 82 − ___ = 47 — with the unknown in any position. Missing Addend and Missing Subtrahend generate exactly this range.
▸How should a child solve 34 + ___ = 71?
By using the inverse: the blank is 71 − 34. Grade 2 is when children should trade counting on for this rewrite-and-subtract move, so model it aloud a few times and then let the sheets do the repetition.
▸How many problems make a good Grade 2 session?
12–15. Two-digit blanks take more thinking than fact recall, so a focused page beats a marathon. The stepper lets you set the exact count.
▸Can I print on A4 and US Letter?
Yes — choose either size in the controls and both the preview and the downloaded PDF reflow to that exact paper, so nothing gets clipped.
▸Can I give the same worksheet again next month?
Yes. Save the link — it stores the exact problems and answer key, so a re-test weeks later uses the identical sheet and the comparison is fair.