Ⅰ 125涔32鐢ㄧ畝渚挎柟娉曟庝箞綆楋紵
125涔32綆渚胯繍綆楀備笅錛
125脳32
錛125脳32
=(5 x 25) x (4 x 8)
=(5 x 8) x (25 x 4)
=40 x 100
=4000
綆渚胯$畻鏂規硶錛
1銆佸湪鍚岀駭榪愮畻涓錛屽彲浠ヤ換鎰忎氦鎹㈡暟瀛楃殑浣嶇疆錛屼絾瑕佽繛鐫鍓嶉潰鐨勭﹀彿涓璧蜂氦鎹銆傦紙鍔犳硶鎴栦箻娉曚氦鎹㈠緥錛
2 銆佸湪鍚岀駭榪愮畻涓錛屽姞鍙鋒垨涔樺彿鍚庨潰鍙浠ョ洿鎺ユ坊鎷鍙鳳紝鍘繪嫭鍙鳳紱鍑忓彿銆侀櫎鍙峰悗闈㈡坊鎷鍙鳳紝鍘繪嫭鍙鳳紝鎷鍙烽噷闈㈢殑瑕佸彉鍙楓傦紙鍔犳硶鎴栦箻娉曠粨鍚堝緥錛
3銆佸噾涓娉曪紝鍑戝嶮娉曪紝鍑戠櫨娉曪紝鍑戝崈娉曪細鈥滃墠闈㈠噾涔濓紝鏈灝懼噾鍗佲濄
蹇呰幫細25鎵4鍑100錛125鎵8鍑1000 錛堝噾鏁存濇兂錛夈
Ⅱ 32×125的三種不同的簡便運算
解析:依題意可得,
32×125
=4×8×125
=4×1000
=4000
32×125
=16×2×125
=4×4×250
=4×1000
=4000
32×125
=(30+2)×125
=30×125+2×125
=3750+250
=4000