问题
解答题
2.5×0.8×2.5×3.2=2.5×(0.8+3.2)______(判断对错)
答案
2.5×0.8×2.5×3.2,
=2.5×0.4×2×2.5×4×0.8,
=(2.5×0.4)×(2.5×4)×0.8×2;
而原题错用了乘法分配律,因此,原题错误.
故答案为:×.
2.5×0.8×2.5×3.2=2.5×(0.8+3.2)______(判断对错)
2.5×0.8×2.5×3.2,
=2.5×0.4×2×2.5×4×0.8,
=(2.5×0.4)×(2.5×4)×0.8×2;
而原题错用了乘法分配律,因此,原题错误.
故答案为:×.