问题 解答题
用你喜欢的方法进行递等式计算.
①7.8÷2.5×4②7.2÷2.88×0.08③8.8×6.9+6.9×1.2④12.6÷3+1.8×0.6.
答案

(1)7.8÷2.5×4,

=3.12×4,

=12.48;

(2)7.2÷2.88×0.08,

=2.5×0.08,

=0.2;

(3)8.8×6.9+6.9×1.2,

=(8.8+1.2)×6.9,

=10×6.9,

=69;

(4)12.6÷3+1.8×0.6,

=4.2+1.08,

=5.28.

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