问题 解答题
(1)2×19×5(2)360÷8÷5
(3)10000÷8÷125(4)8.01×23
(5)1.25×3.2×2.5(6)2.28÷0.125.
答案

(1)2×19×5,

=2×5×19,

=10×19,

=190;

(2)360÷8÷5,

=360÷(8×5),

=360÷40,

=9;

(3)10000÷8÷125,

=10000÷(8×125),

=10000÷1000,

=10;

(4)8.01×23,

=(8+0.01)×23,

=8×23+0.01×23,

=184+0.23,

=184.23;

(5)1.25×3.2×2.5,

=1.25×(0.4×8))×2.5,

=(1.25×8)×(0.4×2.5),

=10×1,

=10;

(6)2.28÷0.125,

=2.28÷0.125÷8×8,

=2.28÷(0.125×8)×8,

=2.28÷1×8,

=18.24.

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