Squigly's Brain Teasers: Number Teasers for Kids


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Number Teasers

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1.	If 7 is equal to 13 then what is 16 equal to?
2.	Lilly has 15 pop can tabs all together they equal $30. She dropped one and lost 2. But she has $26. Explain.
3.	Which is correct: Seven and five is thirteen or Seven and five are thirteen?
4.	How do you write 23 using only the number 2? 34 using only the number 3? 56 using only the number 5? 100 using only the number 9?
5.	In a drawer you have black socks and white socks. They are not stored away in pairs. Without looking, how many times will you have to reach into the drawer to come out with a matching pair?
6.	How many squares are there on a chessboard? (Hint:The answer is not 64.)
7.	You have a 4 gallon and a 7 gallon jug of water. How can you measure exactly 6 gallons of water using these two jugs?
8.	A man weighing 14 stone and his two sons weighing 7 stone each were stranded on an island. All they had to get off the island was a small boat, but it could only hold 14 stone. How did the man and his sons get off the island?
9.	10 candles stand burning in a dining room. A strong breeze blows in through an open window and extinguishes 3 of them. Assuming the wind doesn't extinguish any more candles, how many candles do you have left in the end?
10.	This riddle must be done IN YOUR HEAD and NOT using paper and pen or a calculator. Try it! Take 1000 and add 40 to it. Now add another 1000 to it. Now add 30. And another 1000. Now add 20. Now add another 1000. Now add 10. What is the total?
11.	A boy and his big sister are sitting around the kitchen table chatting. The boy says, "If I take two years away from my age and gave them to you, you'd be twice my age." The sister added, "Why don't you just give me one more and then I'll be three times you age." How old are the siblings?