Grade 1 Place Value Missing Number
Grade 1 place value missing number sheet: 24 problems on tens and ones to 99, ten more and ten less.
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Three different problem sets — same skill, same layout, fresh numbers.
Preview — Set A
Find the number that belongs in each blank.
- 1.7 tens and ___ ones = 70
- 2.___ is 10 more than 79
- 3.8 tens and ___ ones = 86
- 4.___ is 10 more than 59
- 5.1 tens and ___ ones = 17
- 6.___ is 10 more than 36
- 7.8 tens and ___ ones = 88
- 8.___ is 10 more than 69
- 9.9 tens and ___ ones = 94
- 10.___ is 10 more than 24
- 11.5 tens and ___ ones = 59
- 12.___ is 10 more than 63
- 13.4 tens and ___ ones = 49
- 14.___ is 10 more than 41
- 15.9 tens and ___ ones = 93
- 16.___ is 10 more than 47
- 17.7 tens and ___ ones = 74
- 18.___ is 10 more than 16
- 19.6 tens and ___ ones = 67
- 20.___ is 10 more than 35
- 21.6 tens and ___ ones = 69
- 22.___ is 10 more than 32
- 23.6 tens and ___ ones = 65
- 24.___ is 10 more than 73
What this worksheet covers
There are 24 place value problems here — one page to work, one page of answers to check against — and Sets B and C repeat the layout with different numbers. Within that, the blank moves between positions from problem to problem, so no single procedure clears the page and the numbers run as high as 94. Problems 9 and 17, for instance, are "9 tens and ___ ones = 94" and "7 tens and ___ ones = 74". It is written against Common Core 1.NBT.2 — Number & Operations in Base Ten, grade 1.
Skills practised
Grade 1 place value means tens and ones to 99, ten more and ten less, and comparing two-digit numbers. Specifically, the problems practise tens and ones to 99 and ten more and ten less. Concretely, the sheet tests whether a student can reason backwards from a result to a missing part. Twenty different answers appear across the 24 problems, so a student cannot copy one result down the page.
About the missing number format
Each of the 24 problems has a blank, and the blank is not always at the end: problem 9, "9 tens and ___ ones = 94" puts it where the student has to reason backwards. A blank term in an expanded form or a missing power of ten asks the student to reason about structure, not recall a fact.
Set A, Set B and Set C
All three sets are produced by the site's deterministic generator from a fixed seed, so they are the same every time the site is built and the answer keys are exact. Where Set A's problem 13 is "4 tens and ___ ones = 49", Set B's is "9 tens and ___ ones = 99".
How to use this worksheet
Sit alongside for this place value missing number. At grade 1 the useful information is not the score but which of the 24 problems drew a pause. Mark the 24 problems the same day using the key — an error caught immediately is a correction, and one caught next week is a habit.
One mistake to watch for
Ten more than 47 is found by counting on by ones. On this grade 1 missing number, problem 17 ("7 tens and ___ ones = 74") is the kind of item where it shows.
The tens digit has not yet been seen as a thing that can be changed on its own.
Use a hundreds chart and trace the move straight down one row; the ones digit stays put and the student can see it.
Other grade 1 place value formats
The same skill in the other formats available at this grade.
- Drill — 1.NBT.5 — 10 More or 10 Less Practice, 20 problems
- Timed Drill — Grade 1 Place Value Timed Drill, 60 problems
- Mixed Review — Grade 1 Place Value Mixed Review, 24 problems
- Word Problems — Grade 1 Place Value Word Problems, 8 problems
A step either side
The same format one grade down and one grade up — the easier sheet is often the faster fix when this one is not landing.
- Kindergarten Place Value Missing Number — kindergarten, 20 problems
- Grade 2 Place Value Missing Number — grade 2, 24 problems
Missing Number sheets in other grade 1 topics
No paywall and no account — download any set of this grade 1 place value missing number, and the answers for all 24 problems are in the matching key.