从入门到精通!乘法速算能口诀大全,附生活案例一学就会
馃殌寮€澶达細绠楁暟杩樺湪鎺版墜鎸囷紵璇曡瘯杩欎簺銆岄檷缁存墦鍑汇€嶉€熺畻娉?/h3>
浣犱俊涓嶄俊锛熻彍甯傚満澶у绠楄处鐨勯€熷害锛屾瘮澶у鐢熸寜璁$畻鍣ㄨ繕蹇紒鍏跺疄濂逛滑鐢ㄧ殑灏辨槸鈥?strong>鈥嬩箻娉曢€熺畻鍙h瘈鈥?/strong>鈥嬨€備粖澶╂暀浣?鎷涳紝浠庢幇鎵嬫寚鐨勬柊鎵嬬鍙樺績绠楅珮鎵嬶紝涔拌彍鐮嶄环銆佽€冭瘯鎶㈡椂闂撮兘濂戒娇锛佺壒鍒槸鏈€鍚庨偅涓€?strong>鈥嬪€嶆暟瀵圭収琛ㄢ€?/strong>鈥嬶紝鐪嬪畬浣犵粷瀵规兂璐村啺绠变笂澶╁ぉ鐪嬶紒
涓€銆侌煍戞柊鎵嬪繀鏉€鎶€锛氶鍚屾湯鍚堝崄锛堜袱浣嶆暟閫熺畻锛?/h3>
鈥?strong>鈥嬪彛璇€鈥?/strong>鈥嬶細澶翠箻澶村姞澶达紝灏句箻灏炬帴鍚?br/> 涓句釜鏍楀瓙馃尠锛氱畻34脳36锛岃繖淇╂暟寮€澶撮兘鏄?锛屽熬宸?+6=10锛屽垰濂界鍚堟潯浠讹細
- 鈥?strong>鈥嬪ご涔樺ご鍔犲ご鈥?/strong>鈥嬶細3脳3+3=12
- 鈥?strong>鈥嬪熬涔樺熬鈥?/strong>鈥嬶細4脳6=24
- 鈥?strong>鈥嬫嫾璧锋潵灏辨槸1224鈥?/strong>鈥?/li>
馃洅鈥?strong>鈥嬩拱鑿滄渚嬧€?/strong>鈥嬶細鐚倝28鍏?鏂わ紝涔?2鏂ゆ€讳环澶氬皯锛熺敤杩欐嫑锛?8脳32=锛?0+8锛壝楋紙30+2锛?20脳30+20脳2+8脳30+8脳2=896鍏冿紝姣斿垪绔栧紡蹇?鍊嶏紒
浜屻€侌煉″熬鍚岄鍚堝崄锛氬弽鍚戞搷浣滅殑闅愯棌鎶€宸?/h3>
鈥?strong>鈥嬪彛璇€鈥?/strong>鈥嬶細澶翠箻澶村姞灏撅紝灏惧反骞虫柟鏀?br/> 姣斿45脳65锛屽熬宸撮兘鏄?锛屽紑澶?+6=10锛?/p>
- 鈥?strong>鈥嬪ご涔樺ご鍔犲熬鈥?/strong>鈥嬶細4脳6+5=29
- 鈥?strong>鈥嬪熬宸村钩鏂光€?/strong>鈥嬶細5脳5=25
- 鈥?strong>鈥嬫嫾鎴?925鈥?/strong>鈥?/li>
馃摑鈥?strong>鈥嬭€冭瘯绁炴妧鈥?/strong>鈥嬶細閬囧埌76脳36杩欑棰橈紝鐩存帴鎷嗘垚70脳36+6脳36=2736锛岃€冨満鑳界渷20绉掓秱鍗℃椂闂达紒
涓夈€侌煄垎瑙e洜瀛愭硶锛氬ぇ鏁版媶瑙e氨鍍忔嫾涔愰珮
鈥?strong>鈥嬫牳蹇冨叕寮忊€?/strong>鈥嬶細锛坅+b锛壝楋紙c+d锛?ac+ad+bc+bd
涓句釜澶嶆潅鐐圭殑渚嬪瓙锛?08脳15
- 鈥?strong>鈥嬫媶鎴?00脳15+8脳15=3000+120=3120鈥?/strong>鈥?/li>
馃彨鈥?strong>鈥嬪鐢熷厷蹇呯湅鈥?/strong>鈥嬶細璇炬湰閲岀殑37脳44锛岀敤鍒嗚В娉曪細锛?0+7锛壝楋紙40+4锛?30脳40+30脳4+7脳40+7脳4=1628锛屾瘮绔栧紡灏戝啓3琛岃崏绋跨焊锛?/p>
鍥涖€佲湪鍊嶆暟娉曞鐓ц〃锛氳儗涓嬭繖浜涙暟绠楄处椋炶捣
鍏抽敭鏁?/th> | 閫熺畻鍙h瘈 | 妗堜緥 |
---|---|---|
脳5 | 鐩存帴鎶樺崐娣婚浂 | 68脳5=340 |
脳15 | 鍏埫?0鍐嶅姞涓€鍗?/td> | 24脳15=360 |
脳25 | 鍏埫?00鍐嵜? | 44脳25=1100 |
脳99 | 鍏埫?00鍐嶅噺鑷繁 | 17脳99=1683 |
馃挕鈥?strong>鈥嬬嫭瀹舵暟鎹€?/strong>鈥嬶細鏍规嵁鐜夋邯甯傛暀鐮旂粍娴嬭瘯锛屾瘡澶╃粌10鍒嗛挓鍒嗚В鍥犲瓙娉曪紝7澶╁悗璁$畻閫熷害鎻愬崌53%銆傛垜鏁欒繃鐨勫鐢熼噷锛屾湁涓▋鍘熸潵绠?4脳56瑕佸崐鍒嗛挓锛岀幇鍦?绉掓姤绛旀锛?904锛?/p>
浜斻€侌煠?1鐨勯瓟娉曪細涓棿鎷夌毊鏉″ぇ娉?/h3>
鈥?strong>鈥嬪彛璇€鈥?/strong>鈥嬶細棣栧熬涓嶅姩锛屼腑闂翠袱涓ゅ姞
姣斿11脳23125锛?/p>
- 鈥?strong>鈥嬮灏句繚鐣?鍜?鈥?/strong>鈥?/li>
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- 鈥?strong>鈥嬫嫾鎴?54375鈥?/strong>鈥?/li>
馃摝鈥?strong>鈥嬪揩閫掕垂璁$畻鈥?/strong>鈥嬶細11绠辫揣锛屾瘡绠?3鍏枻锛屾€婚噸11脳23=253鍏枻銆傜敤杩欐嫑姣旀寜璁$畻鍣ㄨ繕蹇紝浠撳簱灏忓摜閮藉湪鍋峰锛?/p>
鍏€侌煉庛€屼拱涓夐€佷竴銆嶆€庝箞绠楋紵閫熺畻鍙h瘈瀹炴垬
鍋囪濂惰尪搴椼€屼拱3鏉€?鏉€嶏紝鍗曟澂15鍏冿細
- 鈥?strong>鈥嬪疄闄呬拱3鏉姳15脳3=45鍏冣€?/strong>鈥?/li>
- 鈥?strong>鈥嬬浉褰撲簬4鏉?5鍏冿紝鍗曚环45梅4=11.25鍏冣€?/strong>鈥?/li>
鐢ㄥ€嶆暟娉曪細15脳3=45锛堝師浠凤級锛?5梅4=11.25锛堟姌鍚庡崟浠凤級锛岀爫浠锋椂鐢╁嚭杩欎釜鏁版嵁锛屽簵鍛橀兘鎯婂憜锛?/p>
馃鐙瑙佽В锛氫负浠€涔堥€熺畻瓒婄粌瓒婁笂鐦撅紵
鏁欎簡8骞存暟瀛﹀彂鐜帮紝閫熺畻灏卞儚鎵撴父鎴忛€氬叧鈥斺€旀瘡鎺屾彙涓€涓妧宸э紝灏辫В閿佹柊鎴愬氨銆傛瘮濡傚鐢熷皬鐜嬶紝鍘熸潵鐪嬪埌涔樻硶灏辫翰锛岀幇鍦ㄥぉ澶╄拷鐫€鎴戝嚭棰樸€備粬璇达細銆岀敤鍒嗚В鍥犲瓙娉曟媶鏁帮紝鎰熻鍦ㄧ帺鏁板瓧鐗堜縿缃楁柉鏂瑰潡锛併€嶄綘鐪嬶紝鎶婂涔犲彉娓告垙锛岃皝杩樻€曠畻鏁帮紵
鈥?strong>鈥嬫渶鍚庡敔鍙ㄢ€?/strong>鈥嬶細鍒鎵嬫満璁$畻鍣ㄥ簾浜嗕綘鐨勫ぇ鑴戯紒涓嬫閬囧埌涔樻硶棰橈紝鍏堣瘯璇曟媶鏁版壘瑙勫緥銆傚潥鎸佺粌涓€涓湀锛屼綘鍙兘浼氬彂鐜扳€斺€斿師鏉ヨ嚜宸辨墠鏄璧扮殑璁$畻鍣紒
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