Subtraction · Math worksheet

Subtraction Within 20 Worksheets

Name:Date:Subtraction Within 20 Worksheets1.20–92.5–53.14–74.19–185.11–116.18–37.7–58.18–179.15–410.15–1111.18–012.19–1613.12–1014.15–215.16–1216.10–117.3–118.18–819.13–1020.15–721.15–1022.20–223.4–124.13–925.12–626.4–027.9–028.18–1229.19–330.10–5
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Thirty subtraction problems with numbers up to 20, such as 15 – 8 and 20 – 6. Counting back works for small gaps; for bigger ones, children can think of the matching addition instead.

Shapes
Denominators
fromto

The bottom numbers, from 2 to 12. 2 to 4 keeps to halves, thirds and fourths.

Digits

Base-ten blocks go up to 3 digits: hundreds, tens and ones.

Clocks
Layout
Paper
Numbers0 to 20 and 0 to 20
First number
fromto
Second number
fromto

Leave at 0 for no limit. 10 makes “addition within 10”.

Regrouping

Carrying and borrowing, for addition and subtraction.

For a classOne sheet, answer keys

Each sheet has its own problems: one per student or one per day.

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2 pages: 1 to solve, 1 with the answers

Ideas for using these sheets

  • Teach “think addition”: for 15 – 8, ask what goes with 8 to make 15.
  • Do half the sheet in the morning and the other half after lunch.
  • Print a fresh sheet each week with “New problems” and compare how many are right.

Every setting can be changed above before you print, and “New problems” makes a fresh sheet as often as you like.

Subtraction Within 20 Worksheets: printable math worksheet with 30 problems and an answer key, from a free math worksheet generator

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