Interesting Maths Trick

STEP 1
Ask a friend to write down a number (any number with more than 3 digits will do, but to save time and effort you might suggest a maximum of 8 digits).
Example: 83 972 105

STEP 2
Ask them to add the digits.
Example: 8+3+9+7+2+1+0+5 = 35

      

STEP 3
Ask them to subtract this number from the original one.
Example: 83 972 105 – 35 = 83 972 070

STEP 4
Ask them to select any digit from this new number and strike it out, without showing you.
Example: 83 972 070    

  

STEP 5
Ask them to add the remaining digits and write down the answer they get.
Example: 8+3+9+7+0+7+0 = 34

STEP 6
Ask them to tell you the number they get (34) and you will tell them which number they struck out.

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Turn “Wine” Into Water

What You Need:

• Two empty glasses
• Red food coloring
• Water
• Bleach

Instructions:

1. Put a small amount of bleach in an empty glass.
2. Fill the second glass with water and a few drops of red food coloring.
3. Pour the red water “wine” into the “empty” glass and watch what happens.

Remember, don’t drink either of these liquids. Bleach is poisonous!

Can’t Put Two Pencil Points Together

What You Need:

• 2 pencils
• A friend

Instructions:

1. Tell your friend to hold one pencil in each hand with the pencil points facing each other.
2. Tell him to close one eye and try to touch the points of the pencils together
3. Your friend will realize that this is harder than he thought it would be!
4. How many tries does it take before you can touch the pencil points together with one eye closed?