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SUBTRACTION.
5 from 5 leaves 0 6 from 6 leaves 0
OOO 66 5 66 CON 6 686 964 ope 11 OT OTOT OR OTOT O CO CO C.C.C. OS. 19- 12 13 000-10 13 5 6 14 5 66 5 6 16 66 5 617 12 15 6 6 6 6 6 6 14 15 16 17 18 6 " D 0 7 from 7 leaves 7 68 69 76 96 7 6 10 66 66 11 66 8 from 8 leaves 8 6% 9 66 8 6 10 4 11 O TH CORO 12 12 66 13 GE 15 13 14 15 14 00 00 00 00 00 00 00 SOOCOO 19 - 7 16 766 17 17 8 66 18 8 19 8 6620 FO 7 19 12 10 from 10 leaves 9 from 9 leaves 0 9 6 10 9 6 11 96612 CON 10 10 10 6 6 6 12 13 14 6 CON / 4 5 - 9 6 14 6 15 16 17 66 18 966 1965 966 20 66 9 6 21 66
10 11 12 10 44 10 10 * 21 10 122
