4.8×7.8+78×0.52用简便方法脱式计算?
3个回答
2021-06-21
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4.8×7.8+78×0.52
=0.48x78+0.52x78
=(0.48+0.52)x78
=1x78
=78
4.8×7.8+78×0.52
=4.8x7.8+5.2x7.8
=(4.8+5.2)x7.8
=10x7.8
=78
希望采纳,谢谢!
=0.48x78+0.52x78
=(0.48+0.52)x78
=1x78
=78
4.8×7.8+78×0.52
=4.8x7.8+5.2x7.8
=(4.8+5.2)x7.8
=10x7.8
=78
希望采纳,谢谢!
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4.8×7.8+78×0.52
=0.48×78+78×0.52
=78×(0.48+0.52)
=78×1
=78.
=0.48×78+78×0.52
=78×(0.48+0.52)
=78×1
=78.
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原式=(0.48x78)+78x0.52
=78x(0.48+0.52)
=78x1
=78
=78x(0.48+0.52)
=78x1
=78
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