你想怎样算就怎样算。
|
| (1)775÷25×32 =31×32 =992 |
(2)237﹣37×23 =237-851 =-614 |
(3)368﹣273﹣27 =368-(273+27) =68 |
| (4)165+247+135 =165+135+247 =547 |
(5)198+355 =200+355-2 =553 |
(6)243﹣(43+26) =243-43-26 =174 |
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a.12×(4+25)[ ]
a. 47+(14×5)(1)35+65=
65+35=
35+65○65+35