​5

4

​5

4

9

1

​5

4

9

1

1

4

​5

4

9

1

1

4

3

4

​7,000

​7,000

​7,000

​7,000

​35,000

​Is our answer reasonable? Why or why not?

​Work the problem on your wipe-off board. Be ready to check if the product is correct.

3

8

2

1

3

​4

​5

1

​Write an estimation equation on your board to check if your answer is reasonable.

3

8

1

​5

1

​Write an estimation equation on your board to check if your answer is reasonable.

4,000

3

8

1

​5

1

​Write an estimation equation on your board to check if your answer is reasonable.

4,000

36,000

Is this estimation reasonable?

3

8

1

​5

1