问题
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用简便方法计算下面各题99÷4.5 12÷1.5÷2 1.28×6-1.28-1.28×545×101 4÷2.5 12.5×1.3×0.8.
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用简便方法计算.1.25×4×2.5×0.88.08×1.252.5×(40--0.4)99×0.453.7×4.3+3.7×1.2+3.7×4.5.
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用你喜欢的方法计算下列各题.(1)3.6+(7.43-3.83)×2.5 (2)100×9.5×0.98+9.5×2(3)54.3×1.8+54.3×0.3-54.3×0.1
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用简便方法计算. ①1.25×0.25×32②0.25×3.78×4③6.74×10.1④0.85×99⑤6.8×3.7+6.8×6.3.
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计算下面各题,能用简便方法的就用简便方法计算.(1)15.52-1.6×5-5.7 (2)9.83×1.5+6.17×1.5(3)19.8-0.6×0.6-0
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能简算的要用简便方法计算①3.28×0.46+6.72×0.46②9.73×2.8-4.73×2.8③1.35×6.2+5.79÷0.3④27.9+3.6×2.5÷0.48⑤0