Add 1: Addition Facts

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Add 1 is the first addition family and the base for all the others: every answer is simply the next number up.

Counting on from 1

The answers 2 to 13 are the counting numbers in order, so each answer is exactly one bigger than the one before it.

Say the number, then say the number that comes next: for 1 + 9, the number after 9 is 10. Once this clicks, no counting on fingers is needed.

Children pause when the next number changes its look, as with 9 to 10, 10 to 11 and 12 to 13. Say the counting sequence aloud across those jumps.

Swapping the numbers gives the same answer, so each fact below is learned once and used twice.

Untimed by default. A missed fact shows its answer and comes back later in the round.

One US Letter page, clear in black and white.

10 questions, no timer. At the end you see the score, the facts to practice and a sheet you can print.

Most children meet adding 1 in kindergarten, when they count on from a number. By first grade they should answer without counting from one.

Yes. Adding in either order gives the same total, so the count-on trick works from the bigger number: start at 5 and go up one.