йСѧѧռ2020
ѧʦ˵Ŀͻƿڡʦ˵ɫIJʺ硣鷨ʦ˵ǵī㡣˵ǧϵЦͯҥĹ¡˽ݣͣСѧѧռǡ Сѧѧռ1
μϢʱǰġСʿСĶͬѧ˵죬ҸҳһȤѧ⣬ĿǣŮһںӱɢмˣС˵赱ȻˣŮҲˣӦ2+ 2 = 4ˣ Сҡҡͷ˵ԣ˭вͬĴ𰸣ͻȻְֶҽһƵĿְүүҾ˵СֺĹϵСŮ1Ů1衣ŵŮҲ1Ů1衣 룬Ůһ3ˡ˶˵ᶯԽ Сѧѧռ2
˾˽һСϷҶְ˵ְ֣ܺϷ?ˬĴӦˡְ˵ô?˵25Źӣÿ3ţ1ţ˭õһžˡְ˵УáҪġ˺üΣ
1 ҳ 4 ҳ
ӮˡְֺƣҾͰѡӮ䷽˰ְ֡251˭õ˭䡣ֻҪõ24žͿˡÿõĺ4ţñãõľһӮְֻȻǸĺӣҿĵЦˡ Сѧѧռ3
죬һȥ۵Ŀϵ»ȥȫײ͡
ǶһֱţǺòòˣҵλ¡ˣһͰײ͡12ȣ룺ôƽ?ʱ123=4ÿĸȣҺֳ1ȣ̵2ȣ˵ܲܰ׳ԣ㣬˼֮?ٳԼݾȫ?룬ش𣺡ҳ7/12ٳ5/12ȫˡҺãѧ˷֪ʶȷشˡ
Сѧѧռ4
ѧʦѧڻҵѧҪ1ֳ2.ѧСģ3Ƶ4.ʵƷ ڿʼдѧСġĿǣѧ
磬Ҹ˵Աʤ͵ˡһΪʲôҪأΪڸֺóʵݣԾµˡ
ʮӣ͵ˡǷһװһϴӣһзѽź㣬ҸϽ
2 ҳ 4 ҳ
ӣһԲԲǰΧһȦĻƬмкöϺʣ㣬ཷУͬʱһЩ֥飬ɫdzޡֱʿˮѾгȵİ˷ݣӸϽóһƬ̫óˣм䶼ûֹֻͣʣƬʵڳԲˣӳԵԲxģ̫óˡ
ϢͻȻкܶѧѧأʱװһģǸ壻һԲεģԽԲѾֳɰ˸Ǿа˸ΣҳʣҲ8-6=2ѧ⡣֮Խ충Ϊڸԭ80Ԫ7ۣǾ80x0.7=56ԪҲֻҪ56Ԫˣʡ80-56=24ԪǮx7ԪҲ56+7=63Ԫ
еѧڰ Сѧѧռ5
죬ҺͰְȥǽ˳УְȥһСƳ꣬Ǿͽˣ˳Ժְ־ʹȥȵġ˿֣һƿԪҾֻһƿ˴ƿĺ裬һƿԪһֻһƿȵģҺͰְ־ȥԵˣһƬһԪһңһáǣһζһݮζģһ
3 ҳ 4 ҳ