1.1 Review Worksheet, Part 1 (continued)
Add.
20. − 18 + ( − 12)
21. − 2.3 + 3.5
22. x + 29 for x = − 15
Subtract.
24. − − − ⎛ ⎝ ⎜ 3 4
⎞ ⎠ ⎟
1 4
23. 12 − 22
25. 38 − x for x = 24.6
26. A meteorologist reported that the day’s high temperature was 17°F and the low temperature was − 6°F. What was the difference between the day’s high and low temperatures?
1.1.3 Multiplying and Dividing Real Numbers Find the value of each expression.
27. − 30 ÷ ( − 6)
28. 8( − 4)
29. x ( − 12) for x = − 25
Divide.
÷ − ⎛ ⎝ ⎜
÷ − ⎛ ⎝ ⎜
⎞ ⎠ ⎟
⎞ ⎠ ⎟
÷ 4 1 2
3 4
1 2
3 20
1 4
9 14
15 28
1 2
30.
31.
32.
33.
1
2
1
÷
Multiply or divide if possible.
0 1
34. 0 · 15
35. − 0.25 ÷ 0
36. 0 ÷ 1
37.
3
÷
38. A cold front changes the temperature by − 3°F each day. If the temperature started at 0°F, what will the temperature be after 5 days?
36
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