相关试题
0.5+1
×3.5
+
）×30 3÷2.8（估算）≈ 0.312×2（得数保留1位小数）≈口算
56+37= 80﹣16= 31.5+5= 12﹣1.1=
2×0.2= 2.87÷0.7= 30÷50= 25×8=
= 12×
= 
×
= 
=
1÷
= 0×
= 
+
= 
=
+
）÷
+
+…+
÷
+
÷
．
直接写得数
0.8×0.6= 2﹣
= 1÷
= 
×
=
7.2÷8×4= 3.25×4= 3.3﹣0.7= 0.9+99×0.9=
9÷
= 
+
= 
+﹣+= （0.18+0.9）÷9=
+
）×56= 10×
÷
=
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