(-135)×(-271)+136 |
(-136)×(-271)-135 |
135×271+136 |
136×271-135 |
1352+1362 |
1352+1362 |
2 |
1×(1+2) |
3 |
(1+2)×(1+2+3) |
4 |
(1+2+3)×(1+2+3+4) |
10 |
(1+2+3+…+9)×(1+2+3+…+10) |
(2×5+2)(4×7+2)…(1994×1997+2) |
(1×4+2)(3×6+2)…(1993×1996+2) |
20003-2×20002-1998 |
20003+20002-2001 |
A.651700元 | B.661700元 | C.751700元 | D.601700元 |
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