问题 解答题
用简便方法计算.
4.37×6.3+4.37×3.72.64÷1.25÷0.810.2×0.45.
答案

①4.37×6.3+4.37×3.7,

=4.37×(6.3+3.7),

=4.37×10,

=43.7;

②2.64÷1.25÷0.8,

=2.64÷(1.25×0.8),

=2.64÷1,

=2.64;

③10.2×0.45,

=(10+2)×0.45,

=10×0.45+2×0.45,

=4.5+0.9,

=5.4.

选择题
单项选择题 A3/A4型题