|
在小学数学奥林匹克竞赛中，计算题占有一定的分量，特别是总决赛中还单独设立了计算竞赛（共25 20235+2023+2023+2023+2023 =2023+2023+2023+2023+2023 =20233 2023+99-98-97+96+95-94-93+……+4+3-2 =100+99-98-97+96+95-94-93+92+……+7-6-5+4+3-2 =100+1=101 2+ - - +2023100+3-2 20232023+202398+20238+2023+198+88 =2023000+202300+20230+2023+200+100-2×5-12 =2023300-22=2023278 451.2+48.8+52.5+50.9+47.8+52.3-48.2-59.6 =506-2+1.2-1.2+2.5+0.9-2.2+2.3+1.8-9.6 =200-4.3=195.7 202350 20232×198.9-2023×198.8 =2023×198.9+198.9×1-2023×198.8 =2023198.9-198.8+198.9 =199.1+198.9=398 202320232023198.2023.9=198.8+0.2023.8=198.9-0.1 =+2 a2-b2=a+ba-b 13+23+33+43+……+n3=1+2+3+4……+n2 2023×100-99×99+98×98-97×97+……+2×2-1×1 =100+20230-99+98+2023-97+……+2+12-1 =100+991+98+971+……+2+11 =100+99+98+97+……+2+1 =100+2023÷2=2023 100×100-99×99 2023×2023=20232-122 912+22+32+42+……+102 1153+63+73+83+93 =13+23+33+43+53+……+93-13+23+33+43 =1+2+3+4+5+……+92-1+2+3+42 =452-102=2023 13+23+33+43 | 
