Brain Exercises June 22

Sneaky Arithmetic

  1. A harmonica cost a dollar more than a pencil. Together, they cost $1.10.  How much did each cost?

  2. A ribbon is 30 inches long. If you cut it with a pair of scissors into one-inch pieces, how many snips would it take?

  3. Farmer Brown came to town with some watermelons. He sold half of them plus half a melon, and found that he had one whole melon left.  How many melons did he take to town?

  4. If you took 3 apples from a basket that contained 13 apples, how many apples would you have?

  5. Nine thousand, nine hundred and nine dollars is written like this $9,909. How fast can you write the figures for this sum of money: twelve thousand, twelve hundred and twelve dollars?

  6. How much is 1 times 2 times 3 times 4 times 5 times 6 times 7 times 8 times 9 times 0?

  7. Divide 20 by ½ and add 3. What is the result?

  8. How much does a brick weigh if it weighs 5 pounds plus half of its own weight?

  9. A farmer had 17 sheep. All but 9 died.  How many were left?

  10. How much is twice one half of 987,654,321?


The clues below lead to a 2-word answer that rhymes, such as Big Pig or Stable Table. 

  1. More out-of-focus mink-coat dealer

  2. Lowering of the amount of the penalty for a gymnast’s error.

  3. Seriousness of a hole in a tooth

  4. Making an error at a word bee on a word meaning “ridding from one’s mind”

  5. White radioactive element in a football arena.

  6. Heap in a pathway inside a plane

  7. Disconnected reading material for an editor to smooth out

  8. Yarn about an escargot

  9. Successful oil wells of one who seats people in pews

  10. Beach footwear of defacers of public property


Sneaky Arithmetic

  1. The harmonica cost $1.05, the pencil cost 5 cents. Perhaps you thought the harmonica cost $1 and the pencil cost 10 cents.  But then the harmonica would cost     90 cents more than the pencil.  To cost a dollar more, the harmonica must cost $1.05 and the pencil 5 cents, because $1.05 minus 5cents is $1.

  2. Twenty-nine snips. The last two inches are divided by one snip.

  3. Farmer Brown originally had 3 watermelons. He sold half of them (1 ½) plus a half a melon, which is the same as saying that he sold 2 melons, leaving him with one whole melon.

  4. IF you took 3 apples, then you would have 3 apples.

  5. $13,212 (12,000 +1200+ 12 = 13,212)

  6. If you noticed the zero at the end, then you knew at once that the answer was zero, because zero times anything is zero.

  7. 43 – one half goes into 20 forty times, not ten.

  8. 10 pounds. Two halves make a whole, so if the brick’s total weight is the sum of 5 pounds and half the total weight, the other half must also be 5.

  9. If all but 9 died, then of course 9 were left.

  10. Twice one half of any number is that same number, so the answer is 987, 654,321.

Hinky Pinkies

  1. Blurrier furrier

  2. Deduction reduction

  3. Cavity gravity

  4. Misspelling dispelling

  5. Stadium radium

  6. Aisle pile

  7. Choppy copy

  8. Snail tale

  9. Usher’s gushers

  10. Vandal’s sandals