题目内容
计算:
+
+…+
=______.
| 12+22 |
| 1×2 |
| 22+32 |
| 2×3 |
| 1002+1012 |
| 100×101 |
| 12+22 |
| 1×2 |
| 22+32 |
| 2×3 |
| 1002+1012 |
| 100×101 |
=(
| 12+22 |
| 1 |
| 12+22 |
| 2 |
| 22+32 |
| 2 |
| 22+32 |
| 3 |
| 32+42 |
| 3 |
| 32+42 |
| 4 |
| 1002+1012 |
| 100 |
| 1002+1012 |
| 101 |
=(1+4)+(
| 22+32 |
| 2 |
| 22+12 |
| 2 |
| 32+42 |
| 3 |
| 32+22 |
| 3 |
| 1002+1012 |
| 100 |
| 1002+992 |
| 100 |
| 1002+1012 |
| 101 |
=5+
| 32-12 |
| 2 |
| 42-22 |
| 3 |
| 1012-992 |
| 100 |
| 1002+1012 |
| 101 |
=5+
| (3+1)×(3-1) |
| 2 |
| (4+2)×(4-2) |
| 3 |
| (101+99)(101-99) |
| 100 |
| 1002+1012 |
| 101 |
=5+4+4+…+4-
| 1002+1012 |
| 101 |
=5+4×99-200
| 1 |
| 101 |
=5+396-200
| 1 |
| 101 |
=200
| 100 |
| 101 |
练习册系列答案
相关题目