相关试题
直接写出结果（近似值符号的要求估算）． 
﹣
+
=
×
÷=
﹣
=+
+
+
= 1﹣0.74= 1.25×3×8=
249﹣198= 238÷72≈ 115+178≈ 4.05﹣2.8﹣0.2= 0.9×99+0.9=．
直接写出得数．
1﹣0.64= 0.04+0.6= 1﹣99%= 2000﹣198=
32×12.5%= 0.36÷4×0= 1﹣
=
﹣
= 1÷
=
15.4﹣（5.4﹣4.5）=（
+
）×12= 101×4.7﹣4.7=
= 4.8÷0.08= 1.36+0.64=
=
= 9.3+9.3×99=
=
=
=
÷25%×
=
﹣
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