Bellwork April 29 th – May 3 rd

Bellwork 4/29/13 Put eight x's into this 8-by-8 grid so that no two x's are in line with each other vertically, horizontally, or diagonally. Chess players note: You are being asked to place eight queens on a chessboard so that no queen can capture any other queen.

4/29/13 Solution

Bellwork 4/30/13 Arrange 10 pennies as shown. Now move just 3 pennies to turn the triangle upside down. Draw a good diagram to show how you did it.

4/30/13 Solution

Bellwork 5/1/13 Use six 9's to make a numerical expression that equals 100. You may use addition, subtraction, multiplication, division, parenthesis.

5/1/13 Solutions (9 · 9) + (9 + 9) + (9/9) 99 – / / x (9 x 9) / 9

Bellwork 5/2/13 On this target, I scored exactly 80. How many arrows did I fire if I didn’t miss the target at all?

5/2/13 Solutions 4 arrows = = 80 6 arrows = 80

Bellwork 5/3/13 Carnival!!!!