问题 解答题
脱式计算
8.9×2.7×1.1
8.25×3.4+6.98.95×36-40.74
12.8×0.5+6.433.9×5.4-2.8422-1.6×6.
答案

(1)8.9×2.7×1.1,

=24.03×1.1,

=26.433;

(2)8.25×3.4+6.9,

=28.05+6.9,

=34.95;

(3)8.95×36-40.74,

=322.2-40.74,

=281.46;

(4)12.8×0.5+6.43,

=6.4+6.43,

=12.83;

(5)3.9×5.4-2.84,

=21.06-2.84,

=18.22;

(6)22-1.6×6,

=22-9.6,

=12.4.

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