问题 解答题
0.25×27×445×36+64×451.25×320×250.96×25
9.9×999+9.91.08×1258×25×1.25×16489×101-489
33×1.0328×45+30×135.6×9+560.98×54.
答案

0.25×27×4,

=0.25×4×27,

=1×27,

=27;

45×36+64×45,

=45×(36+64),

=45×100,

=4500;

1.25×320×25,

=1.25×80×4×25,

=(1.25×80)×(4×25),

=100×100,

=10000;

0.96×25,

=0.24×4×25,

=0.24×100,

=24;

9.9×999+9.9,

=9.9×(999+1),

=9.9×1000,

=9900;

1.08×125,

=1×125+0.08×125,

=125+10,

=135;

8×25×1.25×16,

=(8×1.25)×(25×4×4),

=10×400,

=4000;

489×101-489,

=489×(101-1),

=489×100,

=48900;

33×1.03,

=33×1+33×0.03,

=33+0.99,

=33.99;

28×45+30×13,

=28×3×15+15×2×13,

=15×(28×3+13×2),

=15×(84+26),

=15×110,

=15×100+15×10,

=1500+150,

=1650;

5.6×9+56,

=50.4+56,

=106.4;

0.98×54,

=(1-0.2)×54,

=1×54-0.2×54,

=54-10.8,

=43.2.

单项选择题
单项选择题