计算下面各题(能用简便方法计算的要用简便方法计算).
(1)2﹣﹣
﹣
(2)0.8++0.2
(3)15﹣5÷12﹣
(4)7.8×1.17﹣7.8×0.17
(5)0.25++
+
(6)+
﹣
.
直接写出得数.﹣0.01= 1.53+47=
+
=
÷9=
×
=
+0.75=
÷
= 1﹣25%=
0.6÷= 125×8=
×1.8= 0.8÷1.6=
(﹣
)×12= 402﹣62﹣38= 752﹣598= 99+999+2=
直接写出得数.
①14÷21= ②5﹣1.47﹣2.53= ③÷8=
④﹣
= ⑤
÷
﹣
= ⑥
×0.2=
直接写出得数.
1.87+5.3= 2.5×2.4=+
=
×
=
1= 7.2×
= 8
﹣3
= 15.16+9
=
0.092= 24×4%= 3.1﹣0.16﹣0.94=÷
= 3.4÷0.17=
×
÷
×
=
0.63+0.7= 3﹣1.06==
= 0.6÷6=
540÷60= 0.125×16= 3.14×8== 6
=