PART ONE
Exercise
1
Tom thought a certain number. Next he added to it one
hundred and seven, the
received sum he divided by three, and multiplied by four the received quotient . Then he
subtracted six from the last result . After that Tom divided this difference by two and
received number seventy-seven. What number did Tom think?
Write all of your operations. Write this number.
Exercise
2
The sum of three next even numbers is six
hundred and forty five thousand
seven hundred and
ninety-eight.
What are the numbers?
Exercise
5
A very famous American matematician can not read all digits in a very old maths
manuscripts. Help him and complete the manuscripts - write the correct digits instead of
gaps.
a/ 9 _ 2 * _ _ = 52 _ _ 2
b/ 310_ - _ _ 7 = _ 215
Exercise
8
The magic square
Complete the magic square. Use numbers from 1 to 16 - each number use only once. The sum
of all numbers in a line ( down or across) and diagonally should be equal 34.
Exercise 9 Find the surname of the Greek mathematician in the
crossword
Result of the addition
Result of the substraction
Result of the multiplication
Result of the division
A. A quadrangle, which has got one pair of parallel sides at least.
B. In other words: a quotient of two numbers.
C. A maths operation.
D. Under the line of a vulgar fraction.
E. The unit of an angle measure.
F. A quadrangle, which has got two pairs of parallel sides.
G. A part of a circle.
H. A polygon, in which the sum of interior angles is 180°.
I. A rectangle, which has got all sides of the same length.
The sum of square’s sides is 36 cm. The area of the square is:
a) 144cm2 b) 9 cm2 c) 81 cm2 d) 18 cm2
Quadrangle has four sides. Is it true or false?