**Lesson Steps**:

First add 4+6 which is 10.then the 1 goes on top of the 9.finally,add 9+7 and add the 1.so,the answer is 170

**Answer**:

170

**Grade**: 2

**Level**: Primary

**Subject**: Math

**Topic**: Addition

First add 4+6 which is 10.then the 1 goes on top of the 9.finally,add 9+7 and add the 1.so,the answer is 170

170