问题 解答题

简便计算.

(1)37.9×94+37.9×7-37.9.

(2)8888×1111+4444×7778.

答案

(1)37.9×94+37.9×7-37.9,

=37.9×94+37.9×7-37.9×1,

=37.9×(94+7-1),

=37.9×100,

=3790;

(2)8888×1111+4444×7778,

=4444×2×1111+4444×7778,

=4444×(1111×2+7778),

=4444×10000,

=44440000.

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