Year 7 - Maths - 24.4.13

Kok

Thai Sikh International School

Online (Maths 19)                                                                Name:

                                                                                            Year 7 A/B    

1.     A ribbon of length 200cm is cut into 3 pieces x cm , y cm, and z  cm  long.

a)     Calculate  x when y = 100cm, and z= 25 cm

b)    Calculate  y when  x= 95.5 cm  and  z=  50.5 cm

2.     A  rectangle has length  t cm and width  w cm.

a)     Write a formulae for the perimeter (P) of the rectangle.

b)    Write a formulae for the area(A) of the rectangle

c)     Find P   if   t = 6 cm and w= 5 cm

d)    Find  t When  P= 50cm and w= 10 cm

e)      Find A when t= 12 m and  w= 4 m

3.     If   v =  l b w,

a)     Find  v   when l= 4cm, b =6 cm, and w= 2 cm

b)    Find b  if  v= 30m³, l= 10m and  w =3 m (write the formula for b)

c)     Find   w if  v =10m³, l= 2m, and b=5m (write the formula for w)