4.8×6.2-6.2×4.35的简便运算?
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4.8x6.2-6.2x4.35
=6.2x(4.8-4.35)
=6.2x0.45
=6.2x0.4+6.2x0.05
=2.48+0.31
=2.79
=6.2x(4.8-4.35)
=6.2x0.45
=6.2x0.4+6.2x0.05
=2.48+0.31
=2.79
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由题意得:
4.8x6.2-6.2x4.35
=6.2x(4.8-4.35)
=6.2x0.45
=(6+0.2)x0.45
=6x0.45+0.2x0.45
=2.7+0.09
=2.79
4.8x6.2-6.2x4.35
=6.2x(4.8-4.35)
=6.2x0.45
=(6+0.2)x0.45
=6x0.45+0.2x0.45
=2.7+0.09
=2.79
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4.8×6.2-6.2×4.35
=6.2×(4.8-4.35)
=6.2×0.45
=6.2×(0.5-0.05)
=6.2×0.5-6.2×0.05
=3.1-0.31
=2.79
=6.2×(4.8-4.35)
=6.2×0.45
=6.2×(0.5-0.05)
=6.2×0.5-6.2×0.05
=3.1-0.31
=2.79
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4.8ⅹ6.2-6.2ⅹ4.35
=6.2x(4.8+4.35)
=6.2x9.15
=56.73
=6.2x(4.8+4.35)
=6.2x9.15
=56.73
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