用递等式计算．（能简算的要简算）
（1）0.78×0.45+0.55×0.78
（2）4.12×101﹣4.12
（3）（5.36+5.64）÷2.2
（4）0.265÷[（0.98+0.02）×0.5]．
相关试题
÷8.6 4.65+
+
﹣
﹣0.25 5﹣
÷
﹣
+
×3.5 9.9×9+9.9．直接写出得数．
0.333×3≈ 0.375×0.375= 734﹣298= 24
÷8=
2.8×25+1.2×25= 0.48×
= 1.25×
×8= 8.2+0.54+0.46=
直接写得数．
①10﹣4.7= ②
÷5.25= ③
÷
= ④1÷
= ⑤4÷9×
=
⑥3.5÷40= ⑦
+6.25= ⑧0.74×100= ⑨12.2+8%= ⑩15×（
+
）=
= ④
﹣
=
÷
= ⑥3.9÷13= ⑦0.125×0.8= ⑧
×
=
= 1﹣
= 100×1%=
= 8.7﹣7=
+
÷
= 25×0.7×4=
﹣0.375）×5=
×
÷
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