Subtracting Multiples of 10 — Grade 1 Practice
Practice subtracting multiples of 10 from multiples of 10. All numbers are between 10 and 90, and all answers are zero or greater.
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Three different problem sets — same skill, same layout, fresh numbers.
Preview — Set A
Subtract the tens and write the difference on the line.
- 1.20 - 10 =
- 2.30 - 10 =
- 3.40 - 20 =
- 4.50 - 30 =
- 5.60 - 40 =
- 6.70 - 50 =
- 7.80 - 60 =
- 8.90 - 70 =
- 9.50 - 10 =
- 10.60 - 20 =
- 11.70 - 30 =
- 12.80 - 40 =
- 13.90 - 50 =
- 14.90 - 90 =
- 15.80 - 80 =
- 16.70 - 10 =
- 17.80 - 20 =
- 18.90 - 30 =
- 19.90 - 10 =
- 20.40 - 40 =
- 21.60 - 30 =
- 22.80 - 50 =
What this worksheet covers
There are 22 subtraction problems here — one page to work, one page of answers to check against — and Sets B and C repeat the layout with different numbers. What makes this set particular: none of the 22 column problems need regrouping, which keeps the facts themselves in the foreground and the numbers run as high as 90. Problems 8 and 15, for instance, are "90 - 70" and "80 - 80". Common Core 1.NBT.6 is the slot this page fills.
Skills practised
At grade 1, subtraction is about facts within 20, unknown-addend equations, and subtracting multiples of ten, and this sheet takes one slice of that. What a student is asked to do here is subtracting Multiples of 10. To finish it, a student has to recall the subtraction facts quickly and accurately, without counting up to them. Seven different answers appear across the 22 problems, so a student cannot copy one result down the page.
About the drill format
A drill is straight practice: 22 problems of the same kind, laid out across the page with working space under each — problem 8, "90 - 70" is typical of the whole page. A page of same-shaped differences is where a borrowing method either settles or shows its cracks.
Set A, Set B and Set C
Set A is the sheet as it was first published on MathSheetLab, and Sets B and C were derived from it problem by problem: each number became a slot redrawn with the same shape, and every answer was recomputed exactly. Where Set A's problem 12 is "80 - 40", Set B's is "90 - 50".
How to use this worksheet
Sit alongside for this subtraction drill. At grade 1 the useful information is not the score but which of the 22 problems drew a pause. Use the key as a check, not as a grade; none of the 22 problems needs a score attached to be useful.
One mistake to watch for
Subtraction facts are recomputed by counting back one at a time. Problem 15 on this grade 1 drill page, "80 - 80", is where to look for it.
The relationship to addition has not been made explicit, so 13 − 8 is not being read as "8 plus what is 13".
Practise fact families as a unit, four equations at a time, and give unknown-addend problems alongside the subtraction ones.
Other grade 1 subtraction formats
The same skill in the other formats available at this grade.
- Timed Drill — Grade 1 Subtraction Timed Drill, 60 problems
- Missing Number — Grade 1 Subtraction Missing Number, 24 problems
- Mixed Review — Grade 1 Subtraction Mixed Review, 24 problems
- Word Problems — Grade 1 Addition and Subtraction Word Problems, 12 problems
- Vertical Format — Grade 1 Subtraction Vertical Format, 20 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 Subtraction Drill — kindergarten, 20 problems
- Grade 2 Subtraction Practice — grade 2, 20 problems
Drill sheets in other grade 1 topics
No paywall and no account — download any set of this grade 1 subtraction drill, and the answers for all 22 problems are in the matching key.