15×99等于几用地等式计算

15×99等于几用地等式计算
2025-12-14 19:40:13
推荐回答(2个)
回答1:

15×99
=15×(100-1)
=15×100-15×1
=1500-15
=1485

回答2:

15X99
=15X100-15X1
=1500-15
=1485