### Home > MC1 > Chapter 3 > Lesson 3.1.2 > Problem 3-17

3-17.

Read the Math Notes box above. Show how you could use each of the three mental math strategies discussed to make each of the following computations.

Using the Give and Take method,

becomes and becomes .

**Challenge:**Using the Overshoot and Adjust method,

becomes .

Overshoot:

Make sure you adjust.