摘要： 24.2+13.76+0.98
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①[
+(
-0.375)×
]÷
②76×(
-
)+23×(
+
)-53×(
-
)
③100+99-98-97+96+95-94-93+…+8+7-6-5+4+3-2-1
④
⑤(1
+2
+3
+4
)÷(3
+5
+7
+9
)
⑥(
+
+
+…+
)+(
+
+
+…+
)+(
+
+…+
)+…+(
+
)
⑦
+
+
+
+
+
+
+
⑧425÷3
+4
×4
×2
-10
⑨解方程：1
：1.4=75%：x
⑩x-
x=
．
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| 1 |
| 3 |
| 5 |
| 6 |
| 8 |
| 33 |
| 2 |
| 3 |
②76×(
| 1 |
| 23 |
| 1 |
| 53 |
| 1 |
| 53 |
| 1 |
| 76 |
| 1 |
| 23 |
| 1 |
| 76 |
③100+99-98-97+96+95-94-93+…+8+7-6-5+4+3-2-1
④
| 2003×(3.4×69+3.5) |
| 3.5×69-3.4 |
⑤(1
| 2 |
| 3 |
| 3 |
| 4 |
| 4 |
| 5 |
| 5 |
| 6 |
| 1 |
| 3 |
| 2 |
| 4 |
| 3 |
| 5 |
| 4 |
| 6 |
⑥(
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 20 |
| 2 |
| 3 |
| 2 |
| 4 |
| 2 |
| 5 |
| 2 |
| 20 |
| 3 |
| 4 |
| 3 |
| 5 |
| 3 |
| 20 |
| 18 |
| 19 |
| 18 |
| 20 |
⑦
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 8 |
| 1 |
| 31 |
| 1 |
| 62 |
| 1 |
| 124 |
| 1 |
| 248 |
| 1 |
| 496 |
⑧425÷3
| 2 |
| 5 |
| 7 |
| 12 |
| 7 |
| 12 |
| 2 |
| 11 |
| 5 |
| 24 |
⑨解方程：1
| 1 |
| 4 |
⑩x-
| 1 |
| 4 |
| 3 |
| 8 |
| 下面各题，怎样算简便就怎样算． 3.25+2.36+1.64 |
2.4+4.85-1.4 | 9.2-2.64-3.14-0.22 |
| 13.56-（4.4+3.44） | 2.98-3.24+1.12-0.76 | 3.28-（1.2-3.6） |
计算下面各题。
|