One pair of figures which come to the value of 19 is 9 + 10.
2
10
X equals 10 XI equals 11 X11 equals 12 X111 equals 13 XIV equals 14 XV equals 15 XVI equals 16 XVII equals 17 XVIII equals 18 I = 1 V= 5 10 = X largest number first / lower numbers second 10 = x 11 = xi 12 = xii 13 = xiii 14 = xiiii 15 = xv 16 = xvi 17 = xvii 18 = xviii
57 times 12 equals 684. You can find this by multiplying the two numbers directly or using the distributive property.
4+4+4and 6+6+0 and 2x3+6
Not sure what "using equals" means, but 12 is greater.
12 + 10 + 11 equals 33
Any combination really. 1 + 1 + 10, or 12 + 0 + 0, or 1 + 2 + 9, etc.
313
10 plus 10 equals 20 20 divide by 10 equals 2 2 plus 10 equals 12
The average of these numbers is 12.7You calculate this by adding all the numbers up (which in this case equals 254) and then divide by the total number of numbers (which in this case is 20 numbers) 254 divided by 20 equals 12.7
The answer to what times 12 equals 120 is 10. The numerical model for this fact would be 10x12=120