Addition facts · +10

The Plus 10 Facts

Adding 10: a ten and some ones. Every question in this game has a 10 in it.

Play the +10 game See the chart

Plus 10 chart

Number + 1010 + number
1 + 10 = 1110 + 1 = 11
2 + 10 = 1210 + 2 = 12
3 + 10 = 1310 + 3 = 13
4 + 10 = 1410 + 4 = 14
5 + 10 = 1510 + 5 = 15
6 + 10 = 1610 + 6 = 16
7 + 10 = 1710 + 7 = 17
8 + 10 = 1810 + 8 = 18
9 + 10 = 1910 + 9 = 19
10 + 10 = 20same fact turned around

How to learn the +10 facts

Just write the 1 in front

10 + 6 is 1 ten and 6 ones: 16. Nothing to count.

Say the teen names carefully

Sixteen sounds like six-ten, which is why children sometimes write 61. Link the number to one full ten-frame and some extra.

Play the plus 10 game

Every question uses 10

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

Open the game full screen

Quick quiz

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←Plus 9−10Minus 10 factsPrint a drill

Plus 10 FAQ

What's the easiest way to add 10?

Just write the 1 in front. 10 + 6 is 1 ten and 6 ones: 16. Nothing to count.

Does 10 + 7 give the same answer as 7 + 10?

Yes, 17 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