直接写数对又快
66+8= 3.8+6.2= ×
= 47﹣8= 3.8÷0.19=
12÷= 56÷4= 24×0.5=
= 471﹣299=
1÷0.25= = 600÷5= 8﹣0.8=
=
1.06×8×12.5= 1.5×0.6= = 6.6+4= 1.5÷0.3=
= 1﹣0.05=
×4=
=
÷3=
﹣
= 2﹣
﹣
=
= 1﹣
÷
1+
÷
=