3.8*9.9+0.38答的好的我可以给他1000财富

来源:学生作业学帮网 编辑:学帮网 时间:2024/06/02 04:46:10

3.8*9.9+0.38
答的好的我可以给他1000财富

原式=3.8×9.9+3.8×0.1
=3.8×(9.9+0.1)
=3.8×10
=38

3.8*9.9+0.38
=3.8x(9.9+0.1)
=3.8x10
=38

3.8*9.9+0.38
=3.8*9.9+3.8*0.1
=3.8*(9.9+0.1)
=3.8*1
=3.8

38

38

3.8×9.9+0.38
=3.8×10-3.8×0.1+0.38
=38-0.38+0.38
=38-(0.38-0.38)
=38-0
=38