题目内容
用简便方法计算
| 167+289+33+11 | 48×125×2×8 | 23×52+52×77 | 89×101. |
解①167+289+33+11,
=(167+33)+(289+11),
=200+300,
=500;
②48×125×2×8,
=(48×2)×(125×8),
=96×1000,
=96000;
③23×52+52×77,
=(23+77)×52,
=100×52,
=5200;
④89×101,
=89×100+89×1,
=8900+89,
=8989.
=(167+33)+(289+11),
=200+300,
=500;
②48×125×2×8,
=(48×2)×(125×8),
=96×1000,
=96000;
③23×52+52×77,
=(23+77)×52,
=100×52,
=5200;
④89×101,
=89×100+89×1,
=8900+89,
=8989.
练习册系列答案
相关题目