①3400÷17+125×80
②2.5×43+2.5
③(+﹣)÷
④×25××4
⑤×[0.8﹣(﹣0.15)]
⑥7.6﹣3÷7﹣
∶x= :
19+23=
5﹣1.6=
0.23÷0.1=
0.4×0.2=
=
÷0.25=
①2.5×32×12.5%
② ÷[( ﹣ )×3.6]
③87.5×99+87.5
1.2﹣0.5×1.8÷0.9 2.4×+4.6÷ (+-)×3.2
A.
B.
C.
88×5450 3204×83
238÷46 356÷735.6÷0.7