1.1.2 Adding and Subtracting Real Numbers − Worksheet
Example 1:
Add or subtract using a number line.
− − ⎛ ⎝ ⎜ ⎞ ⎠ ⎟ 3 6 1 4
1. − 4 + 7
2. − 3.5 − 5
3. 5.6 − 9.2
4.
Example 2:
Add.
+ − ⎛ ⎝ ⎜
⎞ ⎠ ⎟
3 4
3 4
5. 91 + ( − 11)
6.
7. 15.6 + x for x = − 17.9
4
3
Example 3:
Subtract.
1 5
4 5
8. 23 − 36
9. 4.3 − 8.4
10.
x
x
2
for
1
−
=
Example 4:
11. The Dow Jones Industrial Average (DJIA) reports the average prices of stocks for 30 companies. Use the table to determine the total decrease in the DJIA for the two days.
DJIA 1987
Friday, Oct. 16 − 108.35 Monday, Oct. 19 − 507.99
18
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