Addition fact · bridge through 10
9 + 4 = 13
Nine plus four equals thirteen. This one crosses 10, and crossing 10 in two steps is easier than counting on 4.
See 9 + 4
9 red and 4 yellow. The first frame fills up at 10, and 3 more sit in the next one.
Make 10 first
- Start with the bigger number, 9. It needs 1 more to make 10.
- Split 4 into 1 and 3.
- 9 + 1 = 10.
- 10 + 3 = 13, so 9 + 4 = 13.
A shortcut for nines: 10 + 4 = 14, and 9 is one less than 10, so take 1 off to get 13.
Its fact family
4, 9 and 13 go together, so learning one of these helps with all of them. See the family.
Practice 9 + 4 in a game
A fact sticks when a child has to pull it from memory again and again. In this game 9 + 4 keeps coming back between the other facts in its family.
Every round leans on 9 + 4
Free to play · no signup · works on phones, tablets and computers
Quick quiz
9 + 4 FAQ
What is 9 + 4?
9 + 4 = 13. In words: nine plus four equals thirteen.
Is 9 + 4 the same as 4 + 9?
Yes, both make 13. Adding works in either order, which is why knowing one fact gives you its turnaround for free.
What grade learns 9 + 4?
This is a first and second grade fact. Common Core has children add within 20 in first grade (1.OA.C.6), and by the end of second grade know all sums of two one-digit numbers from memory (2.OA.B.2).
Is Sumtown really free?
Yes. The whole game plays free in your browser, with no signup, no ads and no time limit. All fourteen mini games are in it. An iPhone app is on its way, and you can read what it will add.
An app is on its way
We're building a Sumtown app for iPhone with the parts that need a real app: offline play for car rides, a town map that remembers how far your child got, and a parent report on every fact. Until then, the whole game is free right here.
Coming soon on theApp Store