.绝对值小于3的整数有 个,它们的积是
用你最喜欢的方法计算.1.25×0.25×32 (0.25+)÷(﹣)×0.25+×[(8.7﹣7.5)÷0.2]×0.153.75×58.3÷58.3×6.54÷3.75÷65.456×(+﹣)
简算下列各题548+468+52 9.14﹣1.34﹣4.57 77+2.7+2.3+233200÷4÷25 125×32×25 2009×95+5×2009.
0.4×99+0.4.
简便计算.44×25 204×15 365﹣73﹣27 (25.8+7.5)+2.5.
运用运算定律简算:(1)(+)×24 (2)+×