问题 解答题
直接写得数:
①66×2.011+0.34×201.1=______
4
5
31
÷18=______
③0.805÷0.7=______
④(3.6×
3
4
×1.2)÷(1×2.4×0.18)=______
⑤4270÷14+305×99=______⑥100-58.3÷3-6×13.4=______
⑦(2×5×7)×(
1
2
+
1
5
+
1
7
)=______
1+3+…+1005
1007+1009+…+2011
=______.
答案

①66×2.011+0.34×201.1=201.1;

②4

5
31
÷18=
43
186

③0.805÷0.7=1.15;

④(3.6×

3
4
×1.2)÷(1×2.4×0.18)=
15
2

⑤4270÷14+305×99=30500;

⑥100-58.3÷3-6×13.4=

1
6

⑦(2×5×7)×(

1
2
+
1
5
+
1
7
)=59;

1+3+…+1005
1007+1009+…+2011
=
1
3

故答案为:①201.1,②

129
558
,③1.15,④
15
2
,⑤30500,⑥
1
6
,⑦59,⑧
1
3

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