Worksheets and Other Resources On Adding and Subtracting Within 20
The listing of worksheets and other math resources below are related to the following standard extracted from the Common Core Standards For Mathematics:
Fluently add and subtract within 20 using mental strategies.2 By end of Grade 2, know from memory all sums of two one-digit numbers.
Charts
Printable Addition Table e.g. 0 + 0 to 10 + 10- Printable Subtraction Table up to 19 - 9
Flashcards
- Addition - Sums to 19
- Subtraction - Numbers to 19
- Sums to 12 e.g. 8 + 4
- Sums to 18 e.g. 9 + 9
- 1 + 1 to 1 + 9
- 2 + 1 to 2 + 9
- 3 + 1 to 3 + 9
- 4 + 1 to 4 + 9
- 5 + 1 to 5 + 9
- 6 + 1 to 6 + 9
- 7 + 1 to 7 + 9
- 8 + 1 to 8 + 9
- 9 + 1 to 9 + 9
- Numbers to 12 e.g. 12 - 4
- Numbers to 18 e.g. 17 - 9
Games
Build The Answer Games
- Addition (to 19: 1 of 2)
- Addition (to 19: 2 of 2)
- Addition/ Subtraction (to 19)
- Addition and subtraction game (mixed up numbers and signs for a slightly different challenge)
- Subtraction (to 19)
Worksheets
- 1-digit numbers e.g. 6 + 3, 9 - 4
- Numbers to 18 e.g. 9 + 9, 18 - 6
- Numbers to 12 e.g. 11 - 6
- Numbers to 19 (3 of 3) e.g. 17 - 8
- Addition and Subtraction Problems to 10 # 1
- Addition and Subtraction Problems to 10 # 2
- Addition and Subtraction Problems to 20 # 1
- Addition and Subtraction Problems to 20 # 2
- Mappings to 10 # 1 e.g. add 2 to 4, 6, 7, & 8
- Mappings to 10 # 2
- Mappings to 20 # 1 e.g. add 6 to 7, 8, 9, & 11
- Mappings to 20 # 2
- Bridging 10 e.g. 7 + 4, 8 + 5
- Missing Numbers With Adding and Subtracting to 10 #1 e.g. 6 - __ = 4, __ + 3 = 7
- Missing Numbers With Adding and Subtracting to 10 #2
- Missing Numbers With Adding and Subtracting to 20 #1
- Missing Numbers With Adding and Subtracting to 20 #2 e.g. 12 - __ = 7, __ + 9 = 17
- Numbers to 19 (1 of 3) e.g. 18 - 5 (both horizontal and vertical formats)
- Sums to 19 (1 of 3) e.g. 12 + 4 (both horizontal and vertical addition & no "bridging 10")
- Numbers to 19 (2 of 3) e.g. 14 - 8 (both horizontal and vertical formats)
- Sums to 19 (2 of 3) e.g. 9 + 8 (both horizontal and vertical addition)
- Sums to 19 (3 of 3) e.g. 9 + 9
Worksheet Generator
- Addition and subtraction worksheet generator.
- Customizable Addition Worksheet Generator
- Customizable Subtraction Worksheet Generator
- Addition/ Subtraction Worksheet Generator (adding and/or subtracting zeros, ones, and/or doubles)
- Addition/ Subtraction Worksheet Generator (Cuisenaire Rod-like)
- Addition/ Subtraction Worksheet Generator
You can find out more about the Common Core Standards For Mathematics here.