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Brainteasers

PUZZLES TO TEST MATHEMATICAL SKILLS

FOUR PIN BOWLING. Age 5-6

Which pins must fall down?

Find two different ways: a. to score 5

b. to score 6

c. to score 7

BOOKS. Age 8-10

The pages of Jack's book are numbered from 1.

The page numbers have a total of 555 digits.

How many pages has the book?

How many of the digits are a 5?

BRAINTEASER SOLUTIONS (ANSWERS ON PAGE 55)

Four pin bowling

a) Score 5 by knocking down 1 and 4, or 2 and 3.

b) Score 6 by knocking down 2 and 4, or 1, 2 and 3.

c) Score 7 by knocking down 3 and 4, or 1, 2 and 4.

Books

The book has 221 pages and 42 number fives.

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