It's tough to tell what the space represents. If that's 4503, the 3 is 3 ones, or 3.
503
503
502.65 to 3 significant figures is 503.
value of 12/3 = 412÷ 3 = 4
In each case the difference is twice the absolute value and the absolute value of -3 and +3 (which is 3) is smaller than the absolute value of -4 and +4 (which is 4).
Because 5 100s is 500 and 3 1s is 3 500+3=503
4
The value of 3 is 300.
12/4=3 3 is not a value of 5
About $350.
2012... simple multiplication.
4^3 = 4*4*4 = 64.