Fact FamiliesOne triangle, four facts — addition and subtraction are the same thing.1st GradeThree numbers that belong together make twoaddition facts and two subtraction facts.8 + 5 = 138 + 513The two parts make the whole.5 + 813Order does not matter for addition.13 − 58Take one part away, the other part is left.13 − 85Same whole, other part removed.THE COMMON MISTAKE13 + 5 = 813 − 5 = 8The biggest number is always the whole. It goes first in subtraction and last inaddition.Learn families, not facts. It halves how much there is to remember.Fact Familieslearnposters.com
Fact Families — printable math wall chart from LearnPosters. Free vector PDF, US Letter and A4.

What’s on the Fact Families poster

The rule, 4 worked examples, and the mistake everyone makes.

Learn families, not facts. It halves how much there is to remember.

Questions about the Fact Families poster

What’s on the Fact Families poster?
The rule, 4 worked examples, and the mistake everyone makes. Three numbers that belong together make two addition facts and two subtraction facts.; 8 + 5 = 13; 5 + 8 = 13; 13 − 5 = 8; 13 − 8 = 5; Common mistake: 13 + 5 = 8 → 13 − 5 = 8. Learn families, not facts. It halves how much there is to remember.
Who is the Fact Families poster for?
Fact Families is filed under 1st Grade (ages 6–7), so it matches what that year asks a child to remember. It is equally useful to an older student revisiting math, and to the parent or teacher answering the question at the kitchen table.
When should you use the Fact Families poster?
Cover any one corner. The other two tell you what it was. A wall chart earns its place by being glanceable from where the work is happening, so Fact Families belongs on the wall where that math work actually happens, within glancing distance, rather than filed away.
What other posters go with Fact Families?
3D Shapes, Adding zero and Adding one sit alongside Fact Families in the 1st Grade set. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.3D ShapesAdding zeroAdding one
Is the Fact Families poster free to download and print?
Yes. Fact Families downloads as a free PDF with no account, no email and no watermark, like everything else in the 1st Grade set. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
What size does the Fact Families poster print at?
Fact Families is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Fact Families loses nothing.Printing guide

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