直接写出得数：
①4.5×0.1= ②6.3÷0.7= ③12+1.2= ④2.5﹣1.6= ⑤200×0.04=
⑥1÷0.25= ⑦5.5÷11= ⑧3.6÷0.09= ⑨7.5×0.4= ⑩0.25×4×9=
直接写出得数：
①4.5×0.1= ②6.3÷0.7= ③12+1.2= ④2.5﹣1.6= ⑤200×0.04=
⑥1÷0.25= ⑦5.5÷11= ⑧3.6÷0.09= ⑨7.5×0.4= ⑩0.25×4×9=
是
，这个数是多少？
÷
=
÷12=
÷
= 1÷
=
=
÷21=
÷
=
÷
=
÷
=
÷
=
×
=
﹣
=
= 4÷
=
=
÷2=
×
= 100÷
= 88÷
= 4×
=
1﹣80%= 2.5%×40= 0.8÷1%=
×
=
÷
÷4=
= 0.25÷0375= 28÷
=
÷
= 9÷
= 12÷
=
×
=
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