32ⅹ(25x49+125x56)简便运算方法?
2个回答
2020-04-09
展开全部
简便计算
32ⅹ(25x49+125x56)
=8x4x(25x49+125x26)
=8x4x25x49+8x4x125x56
=(4x25)x(49x8)+(8x125)x(56x4)
=100x392+1000x224
=39200+224000
=263200
32ⅹ(25x49+125x56)
=8x4x(25x49+125x26)
=8x4x25x49+8x4x125x56
=(4x25)x(49x8)+(8x125)x(56x4)
=100x392+1000x224
=39200+224000
=263200
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