Dice are cubes with dots on each face. Opposite faces of a die always have a total of seven dots on them. 

Here are two nets to make dice (cubes); the numbers inserted in each square indicate the number of dots in that box.

Insert suitable numbers in the blanks, remembering that the number on the opposite faces should total to 7.

Dice are, as we all know, cubes with dots on each face. A die's opposite faces are always covered in a total of seven dots.

The first blank net in figure (i) will represent the number 1 in dice because the number 6 is just opposite it. The second net will be 3 because the face opposite it will be 4 as shown, and the third net will be 2 because the face opposite it will be 5.

The first blank net in figure (ii) will represent the number 5 in dice since the number opposite it will be 2 as indicated. The second net will be 6 because the face opposite it will be 1 as indicated, and the third net will be 4 because the face opposite it will be 3.