• the first illustration shows a top and three cubes equal in weight to 12 marbles,
• the second illustration shows a top is equal in weight to a cube and eight marbles,
• the last illustration shows a top and asks how many marbles would be needed to balance with it.
Σάρωση για να αποθηκεύσεις ή να κοινοποιήσεις την ανάρτηση