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
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| 能简算的要用简便方法计算 ①3.28×0.46+6.72×0.46 ②9.73×2.8-4.73×2.8 ③1.35×6.2+5.79÷0.3 ④27.9+3.6×2.5÷0.48 ⑤0.6×（5.3-1.7）÷0.9 ⑥6.4÷[（4.3+2.1）÷0.8]． |
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①3.28×0.46+6.72×0.46，
=（3.28+6.72）×0.46，
=10×0.46，
=4.6，
②9.73×2.8-4.73×2.8，
=（9.73-4.73）×2.8，
=5×2.8，
=14，
③1.35×6.2+5.79÷0.3，
=8.37+19.3，
=27.67，
④27.9+3.6×2.5÷0.48，
=27.9+18.75，
=46.65，
⑤0.6×（5.3-1.7）÷0.9，
=0.6×3.6÷0.9，
=2.4，
⑥6.4÷[（4.3+2.1）÷0.8]，
=6.4÷6.4×0.8，
=1×0.8，
=0.8．