"Please, My Dear Aunt Sally" |
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1.   |
List the marks of inclusion: ( ) and [ ] and { } and ____. |
2.   |
- 1st: Check the expressions in which parentheses are not needed.
- 2nd: Simplify, mentally if possible:
-     a.   (8 - 4) x 2 = 8
- x   b.   (3 x 3) + (4 x 5) = 29
-     c.   3 x (3 + 4) x 5 = 105
-     d.   3 x ([3 + 4] x 5) =105
-     e.   3 x [4 ÷ 2] = 6
-     f.   (6 + 4) ÷ 2 = 5
- x   g.   (4 - 4) + 4 = 4
- x   h.   (4 ÷ 4) + 4 = 5
-     i.   4 ÷ (4 + 4) = 1/2
-     j.   (4 + 4) ÷ 4 = 2
- x   k.   6 + (2 ÷ 4) = 6 1/2
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3.   |
- Complete the following statement. In simplifying an expression,
parentheses are not needed if the operation, and the part of the
expression,
about which the inclusion marks are placed already has priority.
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