摘要： ①3+4+8= ②13-8-1= 5+4+4= 12-6+8= 6+6+6= 6+9-7= 9-3-4= 5+8-10= 11-7-2= 10-1+7=
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| 0.8×1 = = 0.8 |
25×0.4 = = 0.4×25 |
0.2×0.05 = = 0.02×0.5 |
| 7.8 ＜ ＜ 7.8×9.2 |
5.6×0.5 ＞ ＞ 0.5×3.6 |
0.36×0.095 ＜ ＜ 0.36 |
| 5.9×1.06 ＞ ＞ 1.06 |
7.2×0.12 ＜ ＜ 7.2×0.13 |
358 ＞ ＞ 358×0.65 |
|
(1)8 ×10= |
(2)13 ×50= |
(3)6 ×70= |
|
(4)125 ×100= |
(5)16 ×40= |
(6)40 ×30= |
|
(7)25 ×30= |
(8)43 ×20= |
(9)75 ×100= |
|
(10)200 ×40= |
(11)12 ×200= |
(12)15 ×300= |
|
(1)8 ×10= |
(2)13 ×50= |
(3)6 ×70= |
|
(4)125 ×100= |
(5)16 ×40= |
(6)40 ×30= |
|
(7)25 ×30= |
(8)43 ×20= |
(9)75 ×100= |
|
(10)200 ×40= |
(11)12 ×200= |
(12)15 ×300= |