小二甲班正義傑 1. 444+31 = (444+30+1 = 474+1 = (475) 2. 714+74 = 714+70+4 = 784+4 = (788) 3. 213+52 = 213+50+2 = 263+2 = (265) 4. 925+64 = 925+60+4 = 985+4 = (989) 5. 841+48 = 841+40+8 = 881+8 = (889) 6. 545+53 = 545+50+3 = 595+3 = (598) 7. 623+34 = 623+30+4 = 653+4 = (657) 8. 844+24 = 844+20+4 = 864+4 = (868) 9. 567+12 = 567+10+2 = 577+2 = (579) 10. 967+31 = 967+30+1 = 997+1 = (998) 11. 365+33 = 365+30+3 = 395+3 = (398) 12. 672+14 = 672+10+4 = 682+4 = (686) 13. 316+61 = 316+60+1 = 376+1 = (377) 14. 223+53 = 223+50+3 = 273+3 = (276) 15. 954+35 = 954+30+5 = 984+5 = (989) 16. 533+52 = 533+50+2 = 583+2 = (585) 17. 914+73 = 914+70+3 = 984+3 = (987) 18. 432+62 = 432+60+2 = 492+2 = (494) 19. 721+27 = 721+20+7 = 741+7 = (748) 20. 761+17 = 761+10+7 = 771+7 = (778) 21. 122+76 = 122+70+6 = 192+6 = (198) 22. 174+15 = 174+10+5 = 184+5 = (189) 23. 832+37 = 832+30+7 = 862+7 = (869) 24. 731+43 = 731+40+3 = 771+3 = (774) 術季,a十四 12 業 1. 737+22 = 737+20+2 = 757+2 = (759) 2. 244+52 = 244+50+2 = 294+2 = (296) 3. 264+33 = 264+30+3 = 294+3 = (297) 4. 143+16 = 143+10+6 = 153+6 = (159) 5. 624+45 = 624+40+5 = 664+5 = (669) 6. 971+12 = 971+10+2 = 981+2 = (983) 7. 857+21 = 857+20+1 = 877+1 = (878) 8. 924+12 = 924+10+2 = 934+2 = (936) 9. 243+34 = 243+30+4 = 273+4 = (277) 10. 323+56 = 323+50+6 = 373+6 = (379) 11. 126+13 = 126+10+3 = 136+3 = (139) 12. 972+25 = 972+20+5 = 992+5 = (997) 13. 414+14 = 414+10+4 = 424+4 = (428) 14. 222+12 = 222+10+2 = 232+2 = 234) 15. 332+37 = 332+30+7 = 362+7 = (369) 16. 861+26 = 861+20+6 = 881+6 = (887) 17. 677+22 = 677+20+2 = 697+2 = (699) 18. 745+22 = 745+20+2 = 765+2 = (767) 19. 742+16 = 742+10+6 = 752+6 = (758) 20. 942+22 = 942+20+2 = 962+2 = (964) 21. 252+26 = 252+20+6 = 272+6 = (278) 22. 633+43 = 633+40+3 = 673+3 = (676) 23. 833+36 = 833+30+6 = 863+6 = (869) 24. 223+11 = 223+10+1 = 233+1 = (234) 數本34 業 4. 37+91 = 37+90+1 = 127+1 = 128 128-95 = 128-90-5 = 38-5 = (33) 5. 125-74 = 125-70-4 = 55-4 = (51) 51+65 = 51+60+5 = 111+5 = (116) 做做看 (1) 57+63 = 57+60+3 = 117+3 = (120) 120-18 = 120-10-8 = 110-8 = (102) 6. 126-31 = 126-30-1 = 96-1 = 95 126+95 = 126+90+5 = 216+5 = (221) 7. 98+124 = 98+120+4 = 218+4 = (222) 222+26 = 222+20+6 = 242+6 = (248) 做做看 127-62 = 127-60-2 = 76-2 = (74) 練習百分百 1. 寫成直式算算看。 (1) 74+67 = 74+60+7 = 134+7 = (141) (2) 257+92 = 257+90+2 = 347+2 = 349) (3) 57+755 = 57+700+50+5 = 757+50+5 = 807+5 = (812) (4) 506-24 = 506-20-4 = 486-4 = (482) (5) 125-38 = 125-38 = 125-30-8 = 95-8 = (87) 87-26 = 87-20-6 = 67-6 = (61) 達: 共花了 61 元。 (6) 136+189 = 136+100+80+9 = 236+180+9 = 316+9 = (325) 達: 今天共做了 325 個泡芙 |
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