Grade 5 Decimals Missing Number
Grade 5 decimals missing number sheet: 24 problems on adding decimals to hundredths, subtracting decimals to hundredths, multiplying a decimal by a whole number, dividing a decimal by a whole number.
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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.___ + 88.73 = 157.82
- 2.64.57 - ___ = 25.79
- 3.13.8 × ___ = 110.4
- 4.131.2 ÷ 8 = ___
- 5.22.79 + 80.31 = ___
- 6.___ - 10.69 = 46.62
- 7.14.0 × ___ = 70.0
- 8.76.8 ÷ 6 = ___
- 9.84.47 + ___ = 158.18
- 10.___ - 37.27 = 34.54
- 11.___ × 9 = 122.4
- 12.16.2 ÷ 2 = ___
- 13.70.52 + ___ = 121.34
- 14.82.57 - ___ = 2.14
- 15.___ × 12 = 112.8
- 16.___ ÷ 8 = 2.1
- 17.___ + 87.14 = 158.58
- 18.7.22 - 1.71 = ___
- 19.15.1 × ___ = 166.1
- 20.84.5 ÷ 5 = ___
- 21.19.93 + 20.07 = ___
- 22.90.25 - 59.85 = ___
- 23.18.1 × 11 = ___
- 24.___ ÷ 8 = 1.6
What this worksheet covers
24 decimals problems fill this missing number page; problem 9 asks "84.47 + ___ = 158.18", and the sheet stays at that level throughout. Within that, operands run to two decimal places, so the decimal points have to be lined up rather than the right-hand digits and the blank moves between positions from problem to problem, so no single procedure clears the page. Further down, problem 17 asks "___ + 87.14 = 158.58". The sheet sits inside Common Core 5.NBT.7, in the grade 5 Number & Operations in Base Ten strand.
Skills practised
The grade 5 decimals sequence covers adding and subtracting decimals to hundredths, and multiplying and dividing by whole numbers; this page sits inside it. Specifically, the problems practise adding decimals to hundredths, subtracting decimals to hundredths, and multiplying a decimal by a whole number. To finish it, a student has to keep the decimal points aligned and reason backwards from a result to a missing part. 23 different answers appear across the 24 problems, so a student cannot copy one result down the page.
About the missing number format
The 24 problems here move the unknown around, so a student solves for a missing part as often as for a result; problem 9, "84.47 + ___ = 158.18" is one of them. A missing addend or factor with decimals asks the student to undo an operation, which exposes place-value gaps that forward computation hides.
Set A, Set B and Set C
The three sets come from the same generator with three different seeds: same skill, same layout, fresh numbers, and an answer key computed with the problems. Where Set A's problem 13 is "70.52 + ___ = 121.34", Set B's is "74.44 + 84.94 = ___".
How to use this worksheet
By grade 5 a student should take all 24 decimals problems in one sitting. If the page takes more than about fifteen minutes, the underlying facts are probably not automatic yet, and that is worth fixing before more decimals practice piles on. Print Set B of this decimals missing number before writing on Set A; the same skill worked twice a week apart tells you far more than once.
One mistake to watch for
More digits means bigger: 0.125 is judged larger than 0.3. On this grade 5 missing number, problem 17 ("___ + 87.14 = 158.58") is the kind of item where it shows.
Whole-number length comparison is being applied after the point.
Pad both numbers to the same number of places before comparing.
Other grade 5 decimals formats
The same skill in the other formats available at this grade.
- Drill — Grade 5 Adding Decimals to Hundredths, 18 problems
- Timed Drill — Grade 5 Decimals Timed Drill, 72 problems
- Mixed Review — Grade 5 Subtracting Decimals to Hundredths, 18 problems
- Word Problems — Grade 5 Decimals Word Problems, 10 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.
- Grade 4 Decimals Missing Number — grade 4, 24 problems
- Grade 6 Decimals Missing Number — grade 6, 24 problems
Missing Number sheets in other grade 5 topics
Six PDFs, no sign-up: three versions of this grade 5 decimals missing number and three answer keys, each 24 problems long.