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Year 1 subtraction worksheets

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Year 1 · Subtraction

Subtracting within 20

1)15 − 7 =
2)4 − 2 =
3)12 − 5 =
4)10 − 10 =
5)9 − 3 =
6)19 − 9 =
7)19 − 6 =
8)15 − 6 =
9)9 − 7 =
10)17 − 5 =
11)20 − 6 =
12)8 − 3 =
13)6 − 1 =
14)14 − 4 =
15)20 − 15 =
16)19 − 4 =
17)17 − 4 =
18)6 − 6 =
ticked. · free UK primary worksheetsSheet #00137

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Year 1 · Subtraction · Subtracting within 20

1)15 − 7 = 8
2)4 − 2 = 2
3)12 − 5 = 7
4)10 − 10 = 0
5)9 − 3 = 6
6)19 − 9 = 10
7)19 − 6 = 13
8)15 − 6 = 9
9)9 − 7 = 2
10)17 − 5 = 12
11)20 − 6 = 14
12)8 − 3 = 5
13)6 − 1 = 5
14)14 − 4 = 10
15)20 − 15 = 5
16)19 − 4 = 15
17)17 − 4 = 13
18)6 − 6 = 0
ticked. · answersSheet #00137

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What Year 1 subtraction covers

Year 1 subtraction is taking away within 20 — 15 − 7, 19 − 6 — and the subtraction facts that mirror each number bond a child has learned. Every question on the sheet above puts the larger number first, so no answer is ever negative, and zero is a real answer: 10 − 10 = 0 is on the sheet because the curriculum says “including zero” and because it is the case children find strangest. The sheet is 18 questions rather than the usual 20. Every sheet is A4, print-ready, and comes with an answer key.

Answers included — a separate marking page with every sheet.

Questions parents ask

What subtraction does Year 1 cover?

Subtracting within 20, alongside the addition it mirrors. The statutory statement pairs the two operations in one sentence, and Year 1 also covers the subtraction facts that go with each number bond — a child who knows 13 + 7 = 20 is expected to get to 20 − 7 = 13 from it rather than by counting back. These sheets give the written form of that: 15 − 7, 19 − 6, set out to be answered rather than worked out with objects.

Can the answer be zero?

Yes, and it will be — 10 − 10 = 0 turns up on these sheets on purpose. The Year 1 statement says “including zero” in as many words, and zero is genuinely the bit children find odd: taking everything away leaves a number, and that number has to be written down rather than left blank. If your child hesitates or leaves the box empty on one of these, that is the question doing its job.

Why is the bigger number always first?

Because Year 1 subtraction stays in the whole numbers. Negative numbers are not introduced until Year 4, so a sheet that asked for 6 − 14 would be posing a question a Year 1 child has no method for and no vocabulary to describe. These sheets draw two numbers from 1 to 20 and always put the larger one first, so every answer is a whole number of zero or more. Children meet the idea that subtraction cannot be reordered — unlike addition — in Year 2.

Are the answers included?

Yes. Keep 'Answers' ticked and a separate answer-key page is made with every sheet, so marking takes seconds. Every difference is computed exactly and checked.

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