Lesson 2-7, Check Skills You'll Need

1. 2.4, 9.8, 3.6, 7.5, 1.9
   1. 2.4, 7.5, 3.6, 9.8, 1.9
   2. 9.8, 7.5, 3.6, 2.4, 1.9
   3. 2.4, 3.6,.1.9, 7.5, 9.8
   4. 1.9, 2.4, 3.6, 7.5, 9.8
2. 144, 235, 98, 72, 58, 195
   1. 144, 195, 235, 58, 72, 98
   2. 235, 195, 144, 98, 72, 58
   3. 58, 72, 98, 144, 195, 235
   4. 72, 144, 195, 235, 58, 98
3. –12, 14, –3, –8, 7, 0
   1. 14, –12, –8, 7, –3, 0
   2. –12, –8, –3, 0, 7, 14
   3. 0, –3, 7, –8, –12, 14
   4. –3, –8, –12, 0, 7, 14
4. 2 , –3 , –4 , 6 , –2 , 4
   1. –4 , –3 , –2 , 2 , 4 , 6
   2. –2 , –3 , –4 , 2 , 4 , 6
   3. 6 , 4 , 2 , –2 , –3 , –4
   4. 2 , –2 , –3 , –4 , 4 , 6
Use mental math to simplify:
5. 
   1. 7
   2. 5
   3. 25
   4. 4.5
6. 
   1. 8
   2. 9
   3. 7
   4. 21

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