计算下面各题(能简算的要简算).
①4×0.8×2.5×12.5 ②÷[1﹣(
+
)] ③(2.8+3.85÷3.5)×4.6
④6.5×1.83+0.17×6.5 ⑤(+
)×8+
⑥
÷[
×(0.4+
)].
计算下面各题(能简算的要简算).
①4×0.8×2.5×12.5 ②÷[1﹣(
+
)] ③(2.8+3.85÷3.5)×4.6
④6.5×1.83+0.17×6.5 ⑤(+
)×8+
⑥
÷[
×(0.4+
)].