Addition facts · +1

The Plus 1 Facts

Adding 1: the next number. Every question in this game has a 1 in it.

Play the +1 game See the chart

Plus 1 chart

Number + 11 + number
1 + 1 = 2same fact turned around
2 + 1 = 31 + 2 = 3
3 + 1 = 41 + 3 = 4
4 + 1 = 51 + 4 = 5
5 + 1 = 61 + 5 = 6
6 + 1 = 71 + 6 = 7
7 + 1 = 81 + 7 = 8
8 + 1 = 91 + 8 = 9
9 + 1 = 101 + 9 = 10
10 + 1 = 111 + 10 = 11

How to learn the +1 facts

Just say the next number

Adding 1 needs no counting at all. 6 + 1 is whatever comes after 6.

Watch for 1 going first

1 + 7 looks harder than 7 + 1, but it's the same fact. Start from the 7.

Play the plus 1 game

Every question uses 1

Free to play · no signup · works on phones, tablets and computers

Open the game full screen

Quick quiz

Keep going

→Plus 2−1Minus 1 factsPrint a drill

Plus 1 FAQ

What's the easiest way to add 1?

Just say the next number. Adding 1 needs no counting at all. 6 + 1 is whatever comes after 6.

Does 1 + 7 give the same answer as 7 + 1?

Yes, 8 both ways. Adding works in either order.

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