+
=________3.5+6
=________2-
=________
-
=________
-
=________
-
=________0.2-
=________0.3+
=________
×4=________
×
=________
×
________15×1
=________
×
=________0÷
=________24÷
=________
÷
=________
÷1
=________
÷
=________
÷
=________9+
=________12π=________
0.4×3.14=________
0.92=________
2.5×3.4=________
28÷
=________.
10




3
25
032



37.681.2560.818.542分析:利用分数的四则混合运算顺序进行计算,计算中适时的利用小数和分数的互化.
解答:
+
=
3.5+6
=10 2-
=
-
=
-
=
-
=
0.2-
=
0.3+
=
×4=3
×
=
×
15×1
=25
×
=
0÷
=0 24÷
=32
÷
=
÷1
=
÷
=
÷
=
9+
=
12π=37.68 0.4×3.14=1.256 0.92=0.81 2.5×3.4=8.5 28÷
=42.点评:此题考查了按分数的四则混合运算顺序进行计算.