问题
填空题
根据运算定律填空.
(1)12.5×3.4×0.8=(______×______)×______
(2)4.36×2.5+______×2.5=(______+5.64)×______
(3)6.5×2.4+6.5×7.6=____________(__________________)
(4)(6+0.6)×0.25=__________________+__________________.
答案
(1)12.5×3.4×0.8=(12.5×8)×3.4;
(2)4.36×2.5+5.64×2.5=(4.36+5.64)×25;
(3)6.5×2.4+6.5×7.6=6.5×( 2.4+7.6);
(4)(6+0.6)×0.25=6×0.25+0.6×0.25.
故答案为:12.5,8,3.4;5.64,4.36,2.5;6.5,×2.4,+,7.6;6,×,0.25,0.6,×,0.25.