7.2×5.8+5.8÷0.4脱式计算?
2022-12-29
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7.2x5.8+5.8÷0.4
=7.2x5.8+5.8x2.5
=5.8x(7.2+2.5)
=5.8x9.7
=5.8x(10-0.3)
=5.8x10-5.8x0.3
=58-1.74
=56.26
=7.2x5.8+5.8x2.5
=5.8x(7.2+2.5)
=5.8x9.7
=5.8x(10-0.3)
=5.8x10-5.8x0.3
=58-1.74
=56.26
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