直接写出得数．
40×0.25= 1.25×0.8= 0.1÷0.01= 0.6+1.9=
3.5﹣2.25= 12.8÷4=
+
=
﹣
=
12×
= 1÷
=
×
=
÷
=
直接写出得数
1﹣0.375= 0.125×8= 280﹣45= 1.3÷0.25=
400÷600= 8.64×100=
+
=﹣
=
×
=
÷
= 12×
= 6÷
=
直接写出得数
0.5×400= 568﹣198=
÷
=
1÷
﹣÷1=
×12= 1.7+3.03=
13.5﹣5= 10﹣
﹣
=
24×0.5=
+
= 6﹣6÷6= 20×20%=
0.33= 7.2÷0.08= 4÷
= 12.5×6.4=
﹣
= 121×
=
直接写出得数
6÷
= 19÷
=
﹣
=
×
=
0.37+1.6= 4.8÷0.8= 1+8%= 2.5÷1.25=
0÷
=﹣
=
和1千克棉花的
一样重． ．