用竖式计算，带*的要验算．9×78= 706×4= 630×4=129×8= *726÷6= *654÷8=
口算题= = = 10%+0.9= 7﹣7÷8=7﹣7÷8= 79×99= 4÷7+3÷7= 6.8×= ==
能简算的要简算：（1）（25×4﹣12.5）×8 （2）÷6+×（3）×0.75+× （4）4﹣[3.75×（1.2﹣）+]．
简便计算． 64×3.75+3.75×36 25×32×1.25．
用简便方法计算．3892﹣2998= 23﹣2﹣7= 4×5﹣4×4.375=
用简便方法计算①8.36﹣0.75﹣ ②99+992 ③×25+×10．
= 
= 
= 10%+0.9= 7﹣7÷8=
= 
=
=
÷6+
×
×0.75+
×
（4）4﹣[3.75×（1.2﹣
）+
]．
64×3.75+3.75×36 25×32×1.25．
﹣7
= 4
×5
﹣4
×4.375=
②99+992 ③
×25+
×10．
粤公网安备 44130202000953号