Designing exercise and solution for Basic Algebra. [M1]

EXERCISE: BIDMAS

11)2x5+7                 3) 10 -2x5            5) (4-3)x(10-7)           7) (55-5)➗5

 =17                         =0                         1 x 3                             50➗5

                                                             =3                               =10

  2) (2+7)x3               4)14-6+9            6)36➗4+5                8)(37-3)➗(12-8)

  =27                         =17                      9+5                               34 ➗ 4

                                                             =14                                =8

Example I:

a a) Find a when

   1)   a=4                               b) a=8

    a=3a+7                             a=3a+4

    a=3(4)+7                          a=3(8)+4

    a=12+7                             a=24+4

    a=19                                  a=28

Example ll:

a)   Workout the value of each expression when b=6

l) 5+3b                  ll) 2b-10 
5+3(6)                     2(6)-10

  5+18                          12-10

=23                          =2

b)   Use the rule h=5(12-k) to work out h when:

              i)K=7                        ii) k=3 
               h=5(12-7)                  h=5(12-3)
               h=5(5)                       h=5(9)
               h=25                          h=45
 

c) use the rule a=6-b to work out a when:

                             3

i)b=6                     ii) b= 15
 6-6                             6-15 
  3                                  3

2-2                              2-5
  1                                 1
= 0                             =-3