直接写出得数．
0.78+0.22= 
= 
= 0÷
=
3+5%+17%= 
= 0.43+0.17+0.39= 8.4+
=
0.1÷0.01= 1.2×
= 32×2.5= 
=
742﹣299= 101×9.2﹣9.2= 
= 
=
直接写出得数．
0.78+0.22= = = 0÷=
3+5%+17%= = 0.43+0.17+0.39= 8.4+=
0.1÷0.01= 1.2×= 32×2.5= =
742﹣299= 101×9.2﹣9.2= = =
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