2.7÷4+6.3×0.25怎样简便运算?
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2.7÷4+6.3×0.25
=2.7×0.25+6.3×0.25
=0.25×(2.7+6.3)
=0.25×9
=0.25×(10-1)
=0.25×10-0.25×1
=2.5-0.25
=2.25
=2.7×0.25+6.3×0.25
=0.25×(2.7+6.3)
=0.25×9
=0.25×(10-1)
=0.25×10-0.25×1
=2.5-0.25
=2.25
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2.7÷4+6.3×0.25
=2.7/4+6.3/4
=(2.7+6.3)/4
=9/4
=2.25
=2.7/4+6.3/4
=(2.7+6.3)/4
=9/4
=2.25
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=2.7×1/4+6.3×1/4
=1/4×(2.7+6.3)
=1/4×9
=9/4
=1/4×(2.7+6.3)
=1/4×9
=9/4
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原式=2.7x1/4+6.3x1/4
=(2.7+6.3)Ⅹ1/4
=10x1/4
=2.5
=(2.7+6.3)Ⅹ1/4
=10x1/4
=2.5
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