There are six faces numbered 1 to 6 so:
6 + 5 + 4 + 3 + 2 + 1 = 21
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A standard pair of six-sided dice has a total of 12 faces, each with a different number of dots ranging from 1 to 6. The total number of dots on one die is 21 (1+2+3+4+5+6). Therefore, in a pair of dice, there are 42 dots (21 dots per die multiplied by 2).
A standard six-sided die (dice) has a total of 21 dots. This is calculated by adding the number of dots on each face: 1 + 2 + 3 + 4 + 5 + 6 = 21.
To check if your number is a square number, draw little dots. like, for 4 it will 2 dots by 2 dots. if this doesn't work equally, it is not a square number.
A number is a "square number" if it corresponds to a square arrangement of dots in a regular grid pattern. The first few square numbers are...1:.4: (2 x 2 grid). .. .9: (3 x 3 grid). . .. . .. . .and so on.36 is a square number because that's how many dots are in a 6 x 6 grid.. . . . . .. . . . . .. . . . . .. . . . . .. . . . . .. . . . . .
A die has dots to represent numbers and a number cube has actual numbers. Or, depending on what kind of number cube it is, it might just be the same thing.