列竖式计算并验算.
846+395=验算: 507﹣96=验算: 404﹣186=验算: 755+165=验算:
58÷8= 59÷6= 68÷7= 64÷9=
1.25÷2.5= 36×(+
)= 9
÷9=
5×÷
×5= 8﹣8÷9=
÷7=
直接写出得数.
3.2÷0.01=×
=
÷
= 5.6+3.99=
10×= 4×
×
=
÷
= 6.4×0.5=
口算.
0.9×0.4= 31.4+6= 0.64÷4=﹣
=
÷
=
×
=
﹣
=
÷4=
+
+
= 1
﹣
﹣
=
3.14×8= 0.8×40%= 0.125×32=﹣
=
4.5×102= 0.52﹣0.32= 10×10%= 7×÷7×
=
3.14×0.9+3.14×0.1= 52×20%= 30÷75%= 6÷(﹣
)=
直接写出得数.
3.14×4=×16= 1÷
=
÷
= 0÷(
+
)=
3.14×25=×6=
÷
=
×
=(
+
)×8=