题目内容

直接写出得数.
1.4÷0.5=
4
13
×9.1
=
5
7
×
21
25
=
2
3
÷
3
2
=
5-
9
5
=
1028+998=1-0.98=
4
5
-
2
3
=
8×12.5%=102-62=0.53=1÷1%=
49×104≈420÷59≈184÷30≈252×62≈
1.4÷0.5=2.8,
4
13
×9.1
=2.8,
5
7
×
21
25
=
3
5
2
3
÷
3
2
=
4
9
5-
9
5
=3.2,
1028+998=2026,1-0.98=0.02,
4
5
-
2
3
=
2
15
8×12.5%=1,102-62=64,0.53=0.125,1÷1%=100,
49×104≈5000,420÷59≈7,184÷30≈6,252×62≈15000.
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