题目内容
| 用递等式计算. 25×24+125 | 23×34-58 | 320+26×27 | 1500-125×8. |
25×24+125
=600+125,
=725;
23×34-58
=782-58,
=724;
320+26×27
=320+702,
=1022;
1500-125×8
=1500-1000,
=500.
=600+125,
=725;
23×34-58
=782-58,
=724;
320+26×27
=320+702,
=1022;
1500-125×8
=1500-1000,
=500.
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