9.5×+0.5× 9.6-11÷7-×3
1.25×4×0.8×0.25 3.28×37+6.4×32.8﹣328×1%
47+53= 420÷70= 100﹣28.5= 0.03×8= 234﹣199=
50×80= 2.7÷0.9= += 1÷= ×=
0.6+7.91+3.4+0.09 ×3+×8-
①98+2550÷25×15=
②36÷ +36÷ =
③ ×[ ÷( ﹣ )]=
① - + -
②3.6÷0.8÷1.25
③ ÷ + ×
④72×( - )
86+124= ×63=49
2﹣= 1÷×=
10﹣3.6= 8.32÷4=
0.25×0.25= 0.38×90+3.8=