姊︽兂涓嶄細杈滆礋姣忎竴涓姫鍔涚殑浜?/p>
1
绗竴璁?/p>
.
瀹氫箟鏂拌繍绠?/p>
銆愮煡璇嗐�佹柟娉曟⒊鐞嗐�?/p>
瀹氫箟鏂拌繍绠楁槸鎸囪繍鐢ㄦ煇绉嶇壒娈婄鍙锋潵琛ㄧず鐗瑰畾鐨勬剰涔夛紝浠庤�岃В绛旀煇浜涚畻寮忕殑涓�
绉嶈繍绠椼�?/p>
瑙ｇ瓟瀹氫箟鏂拌繍绠楋紝鍏抽敭鏄姝ｇ‘鍦扮悊瑙ｆ柊瀹氫箟鐨勭畻寮忓惈涔夛紝鐒跺悗涓ユ牸鎸夌収鏂板畾
涔夌殑璁＄畻绋嬪簭锛屽皢鏁板�间唬鍏ワ紝杞寲涓哄父瑙勭殑鍥涘垯杩愮畻绠楀紡杩涜璁＄畻銆?/p>
瀹氫箟鏂拌繍绠楁槸涓�绉嶄汉涓虹殑銆佷复鏃舵�х殑杩愮畻褰㈠紡锛屽畠浣跨敤鐨勬槸涓�浜涚壒娈婄殑杩愮畻绗?/p>
鍙凤紝濡傦細
*
銆佲柍銆佲姍绛夛紝杩欐槸涓庡洓鍒欒繍绠椾腑鐨勨�滐紜銆侊紞銆伱椼�伱封�濅笉鍚岀殑銆?/p>
鏂板畾涔夌殑绠楀紡涓湁鎷彿鐨勶紝瑕佸厛绠楁嫭鍙烽噷闈㈢殑銆備絾瀹冨湪娌℃湁杞寲鍓嶏紝鏄笉閫傚悎
浜庡悇绉嶈繍绠楀畾寰嬬殑銆?/p>
銆愬吀渚嬬簿璁层�?/p>
銆愪緥棰?/p>
1
銆?/p>
鍋囪
a*b=(a+b)+(a-b)
锛屾眰
13*5
鍜?/p>
13*
锛?/p>
5*4
锛夈�?/p>
銆愭�濊矾瀵艰埅銆?/p>
杩欓鐨勬柊杩愮畻琚畾涔変负锛?/p>
a*b
绛変簬
a
鍜?/p>
b
涓ゆ暟涔嬪拰鍔犱笂涓ゆ暟涔?/p>
宸�傝繖閲岀殑鈥?/p>
*
鈥濆氨浠ｈ〃涓�绉嶆柊杩?/p>
绠椼�傚湪瀹氫箟鏂拌繍绠椾腑鍚屾牱瑙勫畾浜嗚
鍏堢畻灏忔嫭鍙烽噷鐨勩�傚洜姝わ紝鍦?/p>
13*
锛?/p>
5*4
锛変腑锛屽氨瑕佸厛绠楀皬鎷彿閲岀殑
锛?/p>
5*4
锛夈�?/p>
缁冧範
1
锛?/p>
1.
灏嗘柊杩愮畻鈥?/p>
*
鈥濆畾涔変负锛?/p>
a*b=(a+b)
脳
(a-b).
銆傛眰
27*9
銆?/p>
2.
璁?/p>
a*b=a2+2b
锛岄偅涔堟眰
10*6
鍜?/p>
5*
锛?/p>
2*8
锛夈�?/p>
3.
璁?/p>
a*b=3a
锛?/p>
b
脳
1/2
锛屾眰锛?/p>
25*12
锛?/p>
*
锛?/p>
10*5
锛?/p>
3
鈻?/p>
(4
鈻?/p>
6)
锛?/p>
3
鈻炽�?/p>
4
脳
6
锛嶏紙
4+6
锛壝?/p>
2
銆?/p>
锛?/p>
3
鈻?/p>
19
锛?/p>
4
脳
19
锛嶏紙
3+19
锛壝?/p>
2
锛?/p>
76
锛?/p>
11
锛?/p>
65
13*5=
锛?/p>
13+5
锛?/p>
+
锛?/p>
13-5
锛?/p>
=18+8=26
5*4=
锛?/p>
5+4
锛?/p>
+
锛?/p>
5-4
锛?/p>
=10
13*
锛?/p>
5*4
锛?/p>
=13*10=
锛?/p>
13+10
锛?/p>
+
锛?/p>
13-10
锛?/p>
=26