More Tricky Math Puzzles

Could you supply us with some math puzzles to play with our children? - Like Puzzles
Answer: Try these tricky math puzzles with your children.
1) When does LEG + GET = LET
Answer: When LEG and GET are adjacent angles with E as the vertex.
2)Two hours from now, it will be half as long until noon as it will be an hour from now.
Answer: It is 9 a.m.
3)The ages of a mother and her daughter add up to 66. The digits of the mother's age are those of her daughter's reversed. What three possible ages could they be?
Answer: Their ages could be 06 and 60, 24 and 42, 15 and 51.
4) Leo has $80 in his piggy bank and 20 bills. If he has four more $1 bills than $5 bills and two more $5 bills than $10 bills, how many bills of each denomination does he have?
Answer: He has four $10 bills, six $5 bills, and ten $1 bills.
5) If DESIGNER is worth 47231578, RING is worth 8351, and SEND is worth 2754. What is NERD worth?
Answer: NERD is worth 5784.
6) How many addition signs should be put between the digits of the number 123456789 to equal 99? Where should they be placed?
Answer: The number should have seven addition signs and look like this: 1 plus 2 plus 3 plus 4 plus 5 plus 67 plus 8 plus 9.
7) Draw a blank tic-tac-toe game board. Can you arrange the numbers so that every row, column and diagonal adds up to the same number?
Answer: The rows from left to right are: Row 1: 2 9 4, Row 2: 7 5 3, Row 3: 6 1 8.
8) Take six different books. How many ways can you arrange them from left to right in a bookcase?
Answer: There are 720 ways to arrange the books.
9) Draw a clock face, including the numbers. Now, draw two lines across the face to divide it into three parts so that the sum of the numbers in each part is equal.
Answer: One line should be drawn between 10 and 11 and 2 and 3. The other should be between 8 and 9 and 4 and 5.