0.65×5.6+0.35×4.4怎么算简便呢？
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0.65×5.6+0.35×4.4
=0.65ⅹ8╳0.7+0.7ⅹ0.5ⅹ4.4
=0.7ⅹ(0.65ⅹ8+0.5ⅹ4.4)
=0.7ⅹ(5.2+2.2)
=0.7ⅹ7.4
=5.18
=0.65ⅹ8╳0.7+0.7ⅹ0.5ⅹ4.4
=0.7ⅹ(0.65ⅹ8+0.5ⅹ4.4)
=0.7ⅹ(5.2+2.2)
=0.7ⅹ7.4
=5.18
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0.65×5.6+0.35×4.4
=(0.2+0.35)x5.6+0.35x4.4
=0.2x5.6+0.35x5.6+0.35x4.4
=0.2x5.6+0.35x(5.6+4.4)
=1.12+0.35x10
=1.12+3.5
=4.62
=(0.2+0.35)x5.6+0.35x4.4
=0.2x5.6+0.35x5.6+0.35x4.4
=0.2x5.6+0.35x(5.6+4.4)
=1.12+0.35x10
=1.12+3.5
=4.62
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0.65×5.6+0.35×4.4
=0.65x8x0.7+0.7x0.5x4.4
=0.65x8x0.7+0.5x4.4x0.7
=5.2x0.7+2.2x0.7
=(5.2+2.2)x0.7
=7.4x0.7
=5.18
=0.65x8x0.7+0.7x0.5x4.4
=0.65x8x0.7+0.5x4.4x0.7
=5.2x0.7+2.2x0.7
=(5.2+2.2)x0.7
=7.4x0.7
=5.18
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