Answer:
First:
1. 64 4=16
40 = 10 24 = 6
10 + 6 = 16
2. 91 7=13
70 = 10 21 = 3
10 + 3 = 13
3. 95 5=19
50 = 10 45 = 9
10 + 9 = 19
4. 78 6=13
60 = 10 18 = 3
10 + 3 = 13
5. 45 3=15
30 = 10 15 = 5
10 + 5 = 15
6. 96 8=15
80 = 10 16 = 5
10 + 5 = 15
Second:
A. 32 2 = 16
B. 99 9 = 11
C. 45 3 = 15
D. 88 8 = 11
E. 64 4 = 16
F. 84 7 = 12
G. 90 5 = 18
H. 84 6 = 14
I. 72 4 = 18
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