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脱式计算,能简算的必须简算.12.5×0.25×3204.57×0.36+4.57×0.64103×2.478.6÷12.5÷0.848×0.25×515.72÷(3.8-3.2×0.75)
题目详情
脱式计算,能简算的必须简算.
12.5×0.25×320 4.57×0.36+4.57×0.64 103×2.4 12.5×0.25×320 4.57×0.36+4.57×0.64 103×2.4 78.6÷12.5÷0.8 48×0.25×5 15.72÷(3.8-3.2×0.75) 78.6÷12.5÷0.8 48×0.25×5 15.72÷(3.8-3.2×0.75)
12.5×0.25×320 | 4.57×0.36+4.57×0.64 | 103×2.4 |
78.6÷12.5÷0.8 | 48×0.25×5 | 15.72÷(3.8-3.2×0.75) |
12.5×0.25×320 | 4.57×0.36+4.57×0.64 | 103×2.4 |
78.6÷12.5÷0.8 | 48×0.25×5 | 15.72÷(3.8-3.2×0.75) |
▼优质解答
答案和解析
①12.5×0.25×320,=(12.5×80)×(0.25×4),=1000×1,=1000;②4.57×0.36+4.57×0.64,=4.57×(0.36+0.64),=4.57×1,=4.57;③103×2.4,=(100+3)×2.4,=100×2.4+3×2.4,=240+7.2,=247.2;④78.6...
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