题目内容
口算
|
(1)0.3 ×3= |
(2)5 ×0.5= |
(3)0.8 ×0.6= |
|
(4)1.2 ×6= |
(5)2.1 ×7= |
(6)1.3 ×0.3= |
|
(7)100 ×0.7= |
(8)3.5 ×0.2= |
(9)1.9 ×4= |
答案：0.9;2.5;0.48;7.2;14.7;0.39;70;0.7;7.6
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口算
1 - +0.8= | 7.4-（1 + ）= | 1 - - = | 1.25×7×8= | 12 ÷3= |
| 0.25×0.4= | 4.4-3= | 4÷0.25= | 3÷10%= | 11 ×6= |
 +1÷2 = |  ×（1-）= | 2×0.75= |  ÷ = | 5÷25÷0.4= |
| 0.8××5= | ÷×= | （0.18+ ）÷9= |  × ÷×= | ×÷= |
口算
| 1÷0.01= | 2.4× = | 456-199= | 0.25÷= |
| +0.25= |  = |  = |  = |
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