Add 2: Addition Facts

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Add 2 moves up two steps on the number line, and it is the first family where children start to notice odd and even numbers.

Counting on from 2

Because 2 is even, the answer is even exactly when the other number is even: 2 + 4 = 6 is even and 2 + 5 = 7 is odd.

Count on by two using the next two numbers: for 2 + 7, say 8, then 9. An even number stays even and an odd number stays odd when you add 2.

Crossing ten is the hard part: 2 + 8 reaches 10 exactly and 2 + 9 goes past it. Picture a ten frame with two extra dots.

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.

Yes. 2 + 2 is the first double, and seeing 2 + 3 as double 2 plus 1 gives 5 without counting.

Take 2 away from the answer and see whether the other number comes back: if 2 + 9 = 11, then 11 - 2 should give 9.