What children practise
Addition means combining two amounts to find a total. The first Sumstone Cave section uses totals up to ten. Later sections build towards totals of twenty, fifty, and one hundred. The final cave challenge mixes questions from those earlier levels.
Children choose an answer from four numbers. If an answer is wrong, the same question remains so they can try again.
Try an addition question
4 + 3 = ?
Start with four. Count on three more: five, six, seven. The total is 7.
8 + 9 = ?
Add two to eight to make ten, then add the seven left over. The total is 17.
Play Sumstone Cave
Open Numbervale and choose Sumstone Cave in Adventure Isles. Section 1 is available from the start. Winning a section unlocks the next one and draws a Bird, Dinosaur, Safari, or Sea card assigned to that section.
Play Sumstone Cave