Answer:
(9)7.1
(10) 17.9
(11) 7.8
(12) 137.1
(13) 7.41
(14) $5.95
(15) 24.83
(16) Seven plus 8 is 15, carey the one. 3 plus 4 is 7 plus 1 is 8. Answer: 85
(17) 4.15-1.29= 2.86 2.86+1.29=4.15
(18) 13.78-5.41= 8.37 8.37+5.41= 13.78
(19) 8.3-4.7= 3.6 3.6+4.7=8.3
