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3 + 1 =

3 + 2 = 5

3 + 3 =

3 + 4 = 7

3 + 2 =

3 + 1 = 4

3 + 4 =

3 + 3 = 6

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3 + 5 =

3 + 6 = 9

3 + 7 =

3 + 8 = 11

3 + 6 =

3 + 5 = 8

3 + 8 =

3 + 7 = 10

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3 + 9 =

3 + 10 = 13

3 + 11 =

3 + 12 = 15

3 + 10 =

3 + 9 = 12

3 + 12 =

3 + 11 = 14

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The Addition and subtraction Flashcard shown above is aligned with standard 2OA02 taken from the Common Core Standards For Mathematics (see the extract below) as are the resources listed below.

*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. *

- Printable Subtraction Table up to 19 - 9

- Sums to 12 e.g. 8 + 4
- Sums to 18 e.g. 9 + 9
- Numbers to 12 e.g. 12 - 4
- Numbers to 18 e.g. 17 - 9
- Addition - Sums to 19
- Subtraction - Numbers to 19

- Addition (to 19: 1 of 2)
- Addition (to 19: 2 of 2)
- Addition/ Subtraction (to 19)
- Addition & subtraction game (mixed up numbers and signs for a slightly different challenge)
- Subtraction (to 19)

- Printable Addition Table e.g. 0 + 0 to 10 + 10

- Addition with Making (Bridging) 10 & Cuisenaire Rods e.g. 7 + 6 = 7 + 3 + 3 = 10 + 3 = 13

- 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
- Sums to 19 (1 of 3) e.g. 12 + 4 (both horizontal and vertical addition & no "bridging 10")
- Numbers to 19 (1 of 3) e.g. 18 - 5 (both horizontal and vertical formats)
- Sums to 19 (2 of 3) e.g. 9 + 8 (both horizontal and vertical addition)
- Numbers to 19 (2 of 3) e.g. 14 - 8 (both horizontal and vertical formats)
- Sums to 19 (3 of 3) e.g. 9 + 9

- Customizable Addition Worksheet Generator
- Addition & Subtraction Worksheets
- Customizable Subtraction Worksheet Generator