题文
直接写得数．
1﹣0.92= 12.12﹣12= 
= 
=
= 
= 2.7+1.63+7.3= 0.83×9+0.83=
1.25×
= 78÷2.5÷4=
直接写得数．
1﹣0.92= 12.12﹣12= = == = 2.7+1.63+7.3= 0.83×9+0.83=
1.25×= 78÷2.5÷4=
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