科目：小学数学 来源：小学数学一日一练五年级上学期 题型：013
能简算的要用简便方法计算.
12.4－1.8×4.5÷0.9＝
[ ]
|
A．0.8 |
B．3 |
|
C．3.4 |
D．6.58 |
科目：小学数学 来源： 题型：
| 15 |
| 8 |
| 1 |
| 1×3 |
| 1 |
| 3×5 |
| 1 |
| 5×7 |
| 1 |
| 1999×2001 |
| 1 |
| 2 |
| 1 |
| 1 |
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 7 |
| 1 |
| 1999 |
| 1 |
| 2001 |
| 1 |
| 2 |
| 1 |
| 2001 |
| 1 |
| 2 |
| 2000 |
| 2001 |
| 1000 |
| 2001 |
| 1 |
| 2×4 |
| 1 |
| 4×6 |
| 1 |
| 6×8 |
| 1 |
| 2000×2002 |
科目：小学数学 来源： 题型：
| 1 |
| 3 |
| 1 |
| 4 |
| (4)-(3) |
| 3×4 |
| 1 |
| 3×4 |
| 1 |
| 7 |
| 1 |
| 8 |
| ( )-( ) |
| 7×8 |
| 1 |
| 7×8 |
| 1 |
| 20 |
| 1 |
| 21 |
| ( )-( ) |
| 20×21 |
| 1 |
| 20×21 |
| 1 |
| 100 |
| 1 |
| 101 |
| ( ) |
| ( ) |
| 1 |
| a |
| 1 |
| a+1 |
| a+1 |
| a?a+1 |
| 1 |
| a?(a+1) |
| 1 |
| a?(a+1) |
| 1 |
| 2×3 |
| 1 |
| ( ) |
| 1 |
| ( ) |
| 1 |
| 5×6 |
| 1 |
| ( ) |
| 1 |
| ( ) |
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| 40×41 |
| 1 |
| ( ) |
| 1 |
| ( ) |
| 1 |
| 1999×2000 |
| 1 |
| ( ) |
| 1 |
| ( ) |
| 1 |
| 42 |
| 1 |
| ( ) |
| 1 |
| ( ) |
| 1 |
| 9900 |
| 1 |
| ( ) |
| 1 |
| ( ) |
| 1 |
| 72 |
| 1 |
| ( ) |
| 1 |
| ( ) |
| 1 |
| n?(n+1) |
| 1 |
| ( ) |
| 1 |
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