Addition fact · ten plus
10 + 7 = 17
Ten plus seven equals seventeen. One number is 10, so there's nothing to work out: 17 simply means 1 ten and 7 ones.
See 10 + 7
10 red and 7 yellow. The first frame fills up at 10, and 7 more sit in the next one.
Ten and some more
- One ten-frame is full: that's the 10.
- 7 more counters sit in the next frame.
- Read it as a place-value name: ten and seven is seventeen, written 17.
The 1 in 17 is the ten and the 7 is the ones. Writing it the other way round is a common slip with teen numbers.
Its fact family
7, 10 and 17 go together, so learning one of these helps with all of them. See the family.
Practice 10 + 7 in a game
A fact sticks when a child has to pull it from memory again and again. In this game 10 + 7 keeps coming back between the other facts in its family.
Every round leans on 10 + 7
Free to play · no signup · works on phones, tablets and computers
Quick quiz
10 + 7 FAQ
What is 10 + 7?
10 + 7 = 17. In words: ten plus seven equals seventeen.
Is 10 + 7 the same as 7 + 10?
Yes, both make 17. Adding works in either order, which is why knowing one fact gives you its turnaround for free.
What grade learns 10 + 7?
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).
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