| 直接写得数。 | ||||
| 0.9×5= | 6.4÷0.8= | 1-0.09= | 1÷5= | 0.4×0.25= |
| 3.4+6.6= | 0.32÷0.4= | 0.72÷0.9= | 7.7÷0.07= | 2×0.05= |
| 0.9×5=4.5 | 6.4÷0.8=8 | 1-0.09=0.91 | 1÷5=0.2 | 0.4×0.25=0.1 |
| 3.4+6.6=10 | 0.32÷0.4=0.8 | 0.72÷0.9=0.8 | 7.7÷0.07=110 | 2×0.05=0.1 |
关注公众号回复:奥数答案
即可免费获得密码查看答案

○8.677(3)5.4 × 0. 9 ○0.9 × 5.4 (4)0. 728÷ 0.9○0.728(5)
○
(6) 2.5 ×2 ×0.2○2.5 ×0.2 ×2(7)2.5 ×3 ×4○0.5 ×6 ×10 (8)1.3○1.3334(9)1.2 +1.2 +1.2 ○1.2 ×1.2×1.2(10)4(2.5 + a )○4 ×2.5 +4 a(11)5.6÷0.5○5.6×2(12)3. 69 × 0.17○3. 69 +0.17
[ ]
a.20[ ]
a.3[ ]
[ ]
a.24.3×3[ ]
a.1.2