| | | | | | | | | | | | | | | 1. | | 2. | 3. | | | | | | | | | | | ①1100－11= | ② 1800－18= | ③ 42 16 | | | | | | | 1. 1 | 99 2=198 99 3=297 | 99 5= 495 99 12=1188 | | 99 | | 2 | 99 4= 99 6= 99 7= | 99 9= 99 11= 99 32= | 2. 11 | | | 12 11=132 23 11=253 | 45 11=495 64 11= 72 11= | | 3. 1 | | | 15 15= 25 25= 35 35= 45 45= | 2 | 1 | | | 49 41=2009 52 58=3016 63 67=4221 | | 29 21= 34 36= 73 77= | 89 81= 92 98= | | | | | 89 21= 32 38= 73 27= 19 81= | 96 94= 47 42= | | | 4. | | 28 17=580 28 17= 956 | 28 17=146 28 17=476 | | 1. | 48 11= 73 77= 99 13= | 2. | | | | | 8 | | | | 28 22= 53 57= 99 17= 28 11= | 85 11= 99 57= 95 95= 64 36= | | | 11 99 | | | | | | | | | | | | 11 | 9 58 | 10 62 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1 | | | 11 | 2 | 3 | | 4 | | | | | | | | | | | | | 17 4 | | | | 1. | | | | | | | | | | | | | 86 4 13500 | | | | | | | | | | | 30 3 2 1 | 14 | | | | | | | | | | | | | | | | 42 59 2000 | 3000 | | | | | 2. | | | | | | | | | | | | | | 25 4 125 8 | | 3. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 88 | 77 66 11 | | | | | | | | | | | | 18 15+30=18 | 15+2 15=20 15=300 | | | | | | | | | | | 99 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1. | | | | | | | | | | | 2. | | | | | 3. | | | 4. | | | 2011 | | | | | | | | | | | | | 2020 3 | | |