In each of the following pairs of numbers, state which whole number is on the left of the other number on the number line. Also write them with the appropriate sign (>, <) between them.
(a) 530, 503 (b) 370, 307 (c) 98765, 56789 (d) 9830415, 10023001

(a) 530, 503:  As 530 > 503: 503 is on the left side of 530 on the number line. 

(b) 370, 307: As 370 > 307: 307 is on the left side of 370 on the number line. 

(c) 98765, 56789: As 98765 > 56789: 56789 is on the left side of 98765 on the number line. 

(d) 9830415, 10023001: Since 9830415 < 10023001: 9830415 is on the left side of 10023001 on the number line.