简便算法。
5个回答
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5x32x25x125x6
=5x(4x8)x25x125x6
=(5x6)x(4x25)x(8x125)
=30x100x1000
=3000x1000
=3000000;
209x115+115x209-230x109
=209x(115+115)-230x109
=209x230-230x109
=(209-109)x230
=100x230
=23000
供参考。
=5x(4x8)x25x125x6
=(5x6)x(4x25)x(8x125)
=30x100x1000
=3000x1000
=3000000;
209x115+115x209-230x109
=209x(115+115)-230x109
=209x230-230x109
=(209-109)x230
=100x230
=23000
供参考。
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展开全部
5x32x25x125x6
=5x4x8x25x125x6
=5x6x4x25x8x125
=30x100x1000
=3000000
209*115+115*209-230*109
=209*115+115*209-(115*109+115*109)
=209*115+115*209-115*109-115*109
=115*(209-109)
=115*100
=11500
=5x4x8x25x125x6
=5x6x4x25x8x125
=30x100x1000
=3000000
209*115+115*209-230*109
=209*115+115*209-(115*109+115*109)
=209*115+115*209-115*109-115*109
=115*(209-109)
=115*100
=11500
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展开全部
5×32×25×125×6
=5×(4×8)×25×125×6
=(4×25)×(8×125)×(5×6)
=100×1000×30
=3000000
=5×(4×8)×25×125×6
=(4×25)×(8×125)×(5×6)
=100×1000×30
=3000000
追答
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展开全部
5x32x25x125x6
=5x4x8x25x125x6
=(5x6)x(4x25)x(8x125)
=30x100x1000
=3000000
希望我的回答对您有帮助,满意请采纳,谢谢。
=5x4x8x25x125x6
=(5x6)x(4x25)x(8x125)
=30x100x1000
=3000000
希望我的回答对您有帮助,满意请采纳,谢谢。
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