问题
解答题
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答案
(1)0.85×201,
=0.85×200+0.85×1,
=170+0.85,
=170.85;
(2)0.5×4.85×8,
=0.5×8×4.85,
=4×4.85,
=19.4;
(3)2.5×48-48,
=(2.5×4)×12-48,
=10×12-48,
=120-48,
=72;
(4)2.7+4.29+2.71+6.3,
=(2.7+6.3)+(4.29+2.71).
=9+7,
=16;
(5)1.2×3.5+8.8×3.5,
=(1.2+8.8)×3.5,
=10×3.5,
=35.