Section 27.3 Deliberate Practice: Practice with Negatives
Algebra is a skill, which means it requires practice to become proficient. But it will take more than rote repetition to get there. Deliberate practice is the thoughtful repetition of a task. For each of these sections, you will be given a list of specific skills or ideas to focus on as you practice thinking through the problems.
Focus on these skills:
Do the problem mentally before drawing any part of the number line diagram.
You are free to draw as few or as many steps in your number line calculation as you find necessary.
Present your work legibly.
Worksheet Worksheet
Instructions: Perform the given calculation mentally, then draw out a number line diagram to perform the calculation.
1.
Calculate \(-34 + 18\) mentally and on number line.
2.
Calculate \(23 - 49\) mentally and on number line.
3.
Calculate \(55 - 27\) mentally and on number line.
4.
Calculate \(-48 + 32\) mentally and on number line.
5.
Calculate \(-32 + 58\) mentally and on number line.
6.
Calculate \(35 - 71\) mentally and on number line.
7.
Calculate \(45 - 18\) mentally and on number line.
8.
Calculate \(-328 + 455\) mentally and on number line.
9.
Calculate \(243 - 345\) mentally and on number line.
10.
Calculate \(-314 + 146\) mentally and on number line.