Fact Families Within 20

Tap the number that completes each fact.

Build a fact family — 56 families in play

      1. 2+9=
      2. 11−2=
      3. 9+=11
      4. 11−=2

      1. 3+8=
      2. 11−3=
      3. 8+=11
      4. 11−=3

      1. 4+7=
      2. 11−4=
      3. 7+=11
      4. 11−=4

      1. 5+6=
      2. 11−5=
      3. 6+=11
      4. 11−=5

      1. 3+9=
      2. 12−3=
      3. 9+=12
      4. 12−=3

      1. 4+8=
      2. 12−4=
      3. 8+=12
      4. 12−=4

      1. 5+7=
      2. 12−5=
      3. 7+=12
      4. 12−=5

      1. 6+6=
      2. 12−6=

      1. 2+11=
      2. 13−2=
      3. 11+=13
      4. 13−=2

      1. 4+9=
      2. 13−4=
      3. 9+=13
      4. 13−=4

      1. 5+8=
      2. 13−5=
      3. 8+=13
      4. 13−=5

      1. 6+7=
      2. 13−6=
      3. 7+=13
      4. 13−=6

      1. 2+12=
      2. 14−2=
      3. 12+=14
      4. 14−=2

      1. 3+11=
      2. 14−3=
      3. 11+=14
      4. 14−=3

      1. 5+9=
      2. 14−5=
      3. 9+=14
      4. 14−=5

      1. 6+8=
      2. 14−6=
      3. 8+=14
      4. 14−=6

      1. 7+7=
      2. 14−7=

      1. 2+13=
      2. 15−2=
      3. 13+=15
      4. 15−=2

      1. 3+12=
      2. 15−3=
      3. 12+=15
      4. 15−=3

      1. 4+11=
      2. 15−4=
      3. 11+=15
      4. 15−=4

      1. 6+9=
      2. 15−6=
      3. 9+=15
      4. 15−=6

      1. 7+8=
      2. 15−7=
      3. 8+=15
      4. 15−=7

      1. 2+14=
      2. 16−2=
      3. 14+=16
      4. 16−=2

      1. 3+13=
      2. 16−3=
      3. 13+=16
      4. 16−=3

      1. 4+12=
      2. 16−4=
      3. 12+=16
      4. 16−=4

      1. 5+11=
      2. 16−5=
      3. 11+=16
      4. 16−=5

      1. 7+9=
      2. 16−7=
      3. 9+=16
      4. 16−=7

      1. 8+8=
      2. 16−8=

      1. 2+15=
      2. 17−2=
      3. 15+=17
      4. 17−=2

      1. 3+14=
      2. 17−3=
      3. 14+=17
      4. 17−=3

      1. 4+13=
      2. 17−4=
      3. 13+=17
      4. 17−=4

      1. 5+12=
      2. 17−5=
      3. 12+=17
      4. 17−=5

      1. 6+11=
      2. 17−6=
      3. 11+=17
      4. 17−=6

      1. 8+9=
      2. 17−8=
      3. 9+=17
      4. 17−=8

      1. 2+16=
      2. 18−2=
      3. 16+=18
      4. 18−=2

      1. 3+15=
      2. 18−3=
      3. 15+=18
      4. 18−=3

      1. 4+14=
      2. 18−4=
      3. 14+=18
      4. 18−=4

      1. 5+13=
      2. 18−5=
      3. 13+=18
      4. 18−=5

      1. 6+12=
      2. 18−6=
      3. 12+=18
      4. 18−=6

      1. 7+11=
      2. 18−7=
      3. 11+=18
      4. 18−=7

      1. 9+9=
      2. 18−9=

      1. 2+17=
      2. 19−2=
      3. 17+=19
      4. 19−=2

      1. 3+16=
      2. 19−3=
      3. 16+=19
      4. 19−=3

      1. 4+15=
      2. 19−4=
      3. 15+=19
      4. 19−=4

      1. 5+14=
      2. 19−5=
      3. 14+=19
      4. 19−=5

      1. 6+13=
      2. 19−6=
      3. 13+=19
      4. 19−=6

      1. 7+12=
      2. 19−7=
      3. 12+=19
      4. 19−=7

      1. 8+11=
      2. 19−8=
      3. 11+=19
      4. 19−=8

      1. 2+18=
      2. 20−2=
      3. 18+=20
      4. 20−=2

      1. 3+17=
      2. 20−3=
      3. 17+=20
      4. 20−=3

      1. 4+16=
      2. 20−4=
      3. 16+=20
      4. 20−=4

      1. 5+15=
      2. 20−5=
      3. 15+=20
      4. 20−=5

      1. 6+14=
      2. 20−6=
      3. 14+=20
      4. 20−=6

      1. 7+13=
      2. 20−7=
      3. 13+=20
      4. 20−=7

      1. 8+12=
      2. 20−8=
      3. 12+=20
      4. 20−=8

      1. 9+11=
      2. 20−9=
      3. 11+=20
      4. 20−=9