简便计算:
54.8﹣1.25﹣1.75 5.81+8.3+4.19+11.7 3.54×0.29﹣0.29×2.54
12.5×3.2×2. 0.48×9.9 4.8×6.9+3.1×4.8.
简便计算:
54.8﹣1.25﹣1.75 5.81+8.3+4.19+11.7 3.54×0.29﹣0.29×2.54
12.5×3.2×2. 0.48×9.9 4.8×6.9+3.1×4.8.
试题篮
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