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# TechMathII - 1.4and1.5 - ManipulatingNumbers

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• 1. Bell Ringer
• Find the absolute value of each.
• | -9 + 5 |
• | 31 – 142 |
• | -18 + -67 |
• | -32 – (-12) |
• 98 + 89
• -67 + 17
• -18 + -59
• 1/8 + 1/32
• -2/15 + 3/10
• 3. You try!
• 1) 3/8 – 9/12
• 2) -2/3 + 9/12
• 3) 12 + 2/3
• 4) 19 – 21/2
• 4. Multiplying/Dividing Real Numbers
• -4 * 2.5
• ½ * 2/3
• -4/9 * 6/23
• 1/8 1/12
• -7/12 3/11
• 5. You try 2!
• 1) -3/5 * -4/17
• 2) -1/5 3/11
• 3) 1/14 * 6/7
• 4) 7/13 5/26
• 6. Average - add up and divide by # of items
• Find the average of each set of numbers.
• 12, 15, 7, 21, 18, 19, 20
• 25, 29, 33, 28, 28, 27
• 89, 95, 86, 81, 97, 82, 80, 81, 93, 95, 97, 80
• 7. You try!
• Find the average of each set of numbers.
• 17, 19, 12, 24, 28, 13, 22, 20, 14, 19, 21
• 42, 49, 53, 45, 40, 39, 56, 44, 47
• 108, 111, 102, 115, 101, 99, 112
• 8. Homework
• Manipulating Numbers WS