Add 5: Addition Facts

Zoorithmetic https://zoorithmetic.com/

Add 5 uses the hand as a model: one full hand is five, and the fingers of the other hand show the rest.

Counting on from 5

Adding 5 swaps the last digit between the low half and the high half: 5 + 3 ends in 8, and 5 + 8 ends in 3.

Picture one hand as 5 and count the other hand's fingers: 5 + 3 is a full hand and three more. For 5 + 8, think 5 + 5 = 10 and 3 more, which is 13.

Fingers run out after 5 + 5. Use 5 + 5 = 10 as the anchor and count the rest: 5 + 7 is 10 and 2 more.

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.

For most children, yes, because the full hand gives a clear picture and 5 + 5 = 10 is a landmark.

It is the bridge to ten. Once it is automatic, every other fact in the family becomes 10 plus a small number.