905-598= 0.3+7= 0.72÷0.6= 6÷7= 0.45×6×0.5=
÷ = + = 4÷ ×9= × = × ÷ × =
10×10%=
56%-28%=
1+0.5%=
1-85%=
1÷1%=
1-98%=
3+150%=
3×75%=
3成=( )% 75%=( )折 六成五=( )% 80%=( )成
3.14×5= 3.14×0.1= 3.14×32= 3.14×0.3=
① + = ② × = ③ - = ④ ÷ = ⑤3.2-1.57+6.8=
⑥1.92÷0.6= ⑦39×99= ⑧1421÷69≈ ⑨4.5×0.04= ⑩6+3÷ =
3﹣0.09= 21÷35= 0.77+0.33= 0.4×0.9÷0.4×0.9=
2÷= 0.42﹣0.32= 0.625÷0.25= =
○有( )个。
△有( )个。
(元)