问题 解答题

4.23×7.12+42.3×0.398-0.432×11.

答案

4.23×7.12+42.3×0.398-0.432×11,

=4.23×7.12+4.23×3.98-4.32×1.1,

=4.23×(7.12+3.98-1.1),

=4.23×10,

=42.3.

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