问题
解答题
口算.
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答案
8.1-2.9=5.2, | 2.5×4=10, | 6.3+3.7=10, | 25×0.8=20, | 7-1.9-4.1=1, |
2-9.9=-7.9, | 14÷28=0.5, | 1.6×9+1.6=16, | 3×1.4=4.2. |
口算.
|
8.1-2.9=5.2, | 2.5×4=10, | 6.3+3.7=10, | 25×0.8=20, | 7-1.9-4.1=1, |
2-9.9=-7.9, | 14÷28=0.5, | 1.6×9+1.6=16, | 3×1.4=4.2. |