无
*注意事项:
2.5×20.5+7.5×20.5=(+)×20.5
(1.7×2.5)×=1.7×(×4 )
895×0.9895 1.45×11.45 31.4×1.231.4
1.5×0.9=
0.6×100=
12.5×0.8=
140×0.6=
0.05×1000=
1.1×0.4=
46.7-3.8=
12.5×5=
1.64×41=
0.45×2.5=
①28.4×99+28.4
②3.6×201
③4×0.8×12.5×2.5
④17.5×0.27+1.75×1.3
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