79×25+22×25-25的过程
第1个回答 2017-11-26
利用乘法规律:
79 × 25 + 22 × 25 - 25
= 25 x (79 + 22 - 1)
= 25 x 100
= 7900本回答被网友采纳
79 × 25 + 22 × 25 - 25
= 25 x (79 + 22 - 1)
= 25 x 100
= 7900本回答被网友采纳
第2个回答 2017-11-26
79×25+22×25-25
=25×(79+22-1)
=25×100
=2500
=25×(79+22-1)
=25×100
=2500
第3个回答 2017-11-26
79×25+22×25-25
=(79+22-1)×25
=100×25
=2500
=(79+22-1)×25
=100×25
=2500