2. NEW CAIRO EDUCATIONAL ZONE ELSHOROUK FUTURE INTEGRATED LANGUAGE SCHOOL MATHS DEPARTMENT

3. WORK SHEETS FOR 6TH PRIM 1ST TERM RATIO AND PROPORTION THE MEANING OF RATIO THE RATIO between a number and another number = first number: second number

4. example 3 and 4 are called the terms of the ratio, where 3 is the first term and 4 is the second term I.e. the ratio between 3, 4 =3/4 =3:4 and it is read as 3 to 4

5. NOTICE THAT; 1- WE SIMPLIFY THE RATIO TO ITS SIMPLEST FORM AS A FRACTION 15: 25 (divide both terms by 5 ) = 3: 5 = 3/5 2- THE RATIO TERMS MUST BE OF THE SAME UNIT AND OF THE SAME TYPE E.g. 50 min:2 kg (different type) 50 min: 2 hr (different unit)

6. * THE RATE IS COMPARING BETWEEN TWO DIFFERENT QUANTITIES *for example the speed of a car is 500 km: 1hr =500 km/ hr * The average production of machine = 500 m / hr

7. EXERCISE 1) COMPLETE;-* 1) The ratio is used for comparing two quantities of the same---------, ---- 2) The ratio between a number and another number = ----- ----:------------ 3) ⅓ =-----:-------- 4) 2.1:4.9 =-----------:---------- 5) 5.5: 22 = -----------:------------ 6) a triangle with sides lengths 30,40,50 cm then the ratio between its sides =--------:---------:---------- 7) If a equals half b, then a / b = -----:----- 8) if 5,25,x,10 are proportional numbers then x = --------9)⅜ : ⅞ =--------:---------- 10) the ratio between the side length of a square and its perimeter = …….. : ……….. ---------------------------------------------------------------------

8. EXERCISE *2) CHOOSE THE CORRECT ANSWER:- A) 1/2 hour: 36 minutes = …………………………… (1: 72, 6: 5 or 5: 6) b)500 PT :15 LE = ……………………………………… (500: 15, 15: 500 OR 1: 3) C) if a : b = 2 : 3 then b : a = …………………………... (2: 3, 3: 2 or 2/3) d) 5 000 m : 5 km = ……………………………………. ( 1 : 5, 5 : 1 or 1 : 1 )