小二甲 蘇家榆 數補 p30 08/17/97 星期日 天氣:情 心情:高興 1. 257+829 = 257+800+20+3+6 = 1086 驗算:1086-829 = 1086-800-20-6-3 = 257 2. 522+535 = 522+500+30+5 = 1057 驗算:1057-535 = 1057-500-30-5 = 522 3. 681+774 = 681+400+300+20+50+4 = 1455 驗算:1455-774 = 1455-400-300-50-20-4 = 681 4. 349+843 = 349+700+100+40+10+2 = 1192 驗算:1192-843 = 1192-100-700-40-2-1 = 349 5. 994+922 = 994+100+800+10+10+2 = 1916 驗算: 1916-922 = 1916-900-10-10-2 = 994 6. 656+692 = 656+400+200+50+40+2 = 1348 驗算:1348-692 = 1348-300-300-40-50-2 = 856 7. 355+781 = 355+700+50+30+1 = 1136 驗算:1136-781 = 1136-100-600-30-50-1 = 355 8. 855+926 = 855+200+700+20+5+1 = 1781 驗算:1781-926 = 1781-700-200-20-1-5 = 855 9. 296+659 = 296+600+10+40+4+5 = 955 驗算:955-659 = 955-600-50-5-4 = 296 10. 612+435 = 612+400+30+5 = 1047 驗算:1047-435 = 1047-400-30-5 = 612 |
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