题目内容
【题目】计算下面各题(能简算的要简算)
①86.4÷3.2﹣6.4×3.2 | ② | ③( |
④ | ⑤1﹣ | ⑥(0.25+ |
【答案】解: ①86.4÷3.2﹣6.4×3.2
=27﹣20.48
=6.52
②
÷7+
× ![]()
=
×
+
× ![]()
=(
+
)× ![]()
=1× ![]()
= ![]()
③(
+
﹣
)×6.3
=
×6.3+
×6.3﹣
×6.3
=4.9+1.2﹣2.7
=6.1﹣2.7
=3.4
④
÷(
﹣
)×3
=
÷
×3
=7×3
=21
⑤1﹣
×(0.32+
)
=1﹣
×0.32﹣
× ![]()
=1﹣0.04﹣0.2
=0.96﹣0.2
=0.76
⑥(0.25+
)×(
﹣
)
=
× ![]()
= ![]()
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