This game is ideal for mental/oral sessions practising number bonds.
‘Ping Pong’ is always popular and well remembered by children.
Start off saying ‘ping’, and the children reply with ‘pong’.
Repeat/reverse, and then convert the pings and ponds to numbers, i.e. if the teachers says ‘2’ the children should reply with ‘8’ (if doing number bonds to 10).
This activity could be extended by using other number bonds (e.g. bonds to 20, 50, 100, 1000 and decimals). You could also ask a student to be the person who calls out the first number, with the rest of the class responding.