+ = | - = | 0.25×0.12= | 7.2÷0.4= |
× = | ÷ = | 3.6÷25%×4= | = |
+
=
;
-
=
;0.25×0.12=0.03;7.2÷0.4=18;
×
=
;
÷
=1; 3.6÷25%×4=57.6;(12.5+
)×8=106;故答案为:
,
,0.03,18,
,1,57.6,106.分析:①②通分计算;③把0.25化成分数,约分即可;④把被除数和除数分别扩大10倍,再计算;⑤约分即可;⑥把除法改为乘法,约分即可;⑦把25%化为分数,然后把除法改为乘法计算即可;⑧运用乘法分配律简算.
点评:此题考查了通分、约分、数字转化以及运算定律的运用.
=