Addition fact · plus 0, 1 and 2
2 + 2 = 4
Two plus two equals four. Adding 2 is two small hops up from 2. No need to count from 1.
See 2 + 2
2 red and 2 yellow.
Count on 2 from the bigger number
- Say the bigger number and hold it in your head: 2.
- Count on 2: 3, 4.
- You stopped on 4, so 2 + 2 = 4.
Its fact family has two facts
2, 2 and 4 go together, so learning one of these helps with all of them. See the family.
Practice 2 + 2 in a game
A fact sticks when a child has to pull it from memory again and again. In this game 2 + 2 keeps coming back between the other facts in its family.
Every round leans on 2 + 2
Free to play · no signup · works on phones, tablets and computers
Quick quiz
2 + 2 FAQ
What is 2 + 2?
2 + 2 = 4. In words: two plus two equals four.
Why is 2 + 2 called a double?
Because both numbers are the same. It has a smaller fact family than most: just 2 + 2 = 4 and 4 − 2 = 2.
What grade learns 2 + 2?
Facts within 5 are a kindergarten goal: Common Core standard K.OA.A.5 says to fluently add and subtract within 5.
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