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Thursday, 23 October 2014

Add/Sub Yr 8-2 WALT solve subtraction problems with hundredths by changing the second number into a whole number.


a)

        7.18 - 4.89=2.29
       +0.11              +0.11


        7.29 - 5.0=2.29
f)
        
       12.08 - 4.66= 7.42
        +0.34    +0.34


        12.42 - 5.0=7.42
k)

      8.72 - 4.12= 4.62
       -0.12    -0.12


        8.62 - 4.0 = 4.62
b)

        5.03 - 2.47= 3.43
       -0.3      -0.3


        5.00 - 2.43 = 3.43

       
g)
        
        7.78 - 3.98 = 3.30
       +0.2               +0.2


        7.80 - 4.0= 3.30
l)

        7.22 - 5.78=1.44
       +0.22           +0.22


       7.44 - 6.0=1.44

        
c)    

       8.92 - 6.37= 3.45
        +0.8       +0.8


        9.0 - 6.45 = 3.45
h)
       
       6.55 - 3.04=2.29
    +0.04              +0.04


        6.51 - 3.00 = 3.51
m)

         11.01 - 5.93=5.08
       +0.07            +0.07


         11.08 - 6.0=5.08
d)     

         7.11 - 5.88=2.29
        -0.11          -0.11


        7.00 - 5.77=2.77
i)
      
        8.72 - 4.12= 4.62
       -0.12          -0.12


        8.62 - 4.0 = 4.62
n)

        6.44 - 2.77=3.67
       +0.23           +0.23


        6.67 - 3.0=3.67
e)
      
         7.46 - 2.12 =2.29
       -0.12          -0.12


        7.34 - 2.0 = 5.34
j)
      
        13.45 - 9.99= 4.62
       +0.11             +0.11

        13.56 - 10.1 = 23.66
o)

       13.77 - 12.88=0.89
       +0.12            +0.12


       13.89 - 13.0=0.89

a) 7.63 - 1.77=4.93

b) 12.24 - 4.02=8.22

c) 16.74 - 5.88=10.86
d) 12.34 - 6.59=5.75

e) 7.76 - 1.12= 6.64

f) 14.45 - 2.59=11.86
g) 7.03 - 2.99=5.03

h) 11.53 - 1.02=10.51

i) 6.34 - 2.58=3.76


  1. 7.63 - 1.89 = 6.26
              7.00 - 1.00 = 6.00
             0.60 - 0.80 = 0.20
             0.03 - 0.09 = 0.06
  1. 13.12 - 5.75 = 8.63
              13.00 - 5.00 = 8.0
              0.10 - 0.70 = 0.60
                0.02 - 0.05 = 0.03
  1. 17.08 - 12.55 = 5.47
              17.00- 12.00 = 5.00
               00.08 - 0.55 = 0.47
  1. 54.20 - 9.99= 46.19
              54.00 - 9.00 = 45.0
               0.20 - 0.99 = 1.19
  1. 3.25 - 1.22 = 2.03
              3.00 - 1.00 = 2.00
              0.25 - 0.22 = 0.03
  1. 6.05 - 5.89 = 1.94
              6.00 - 500 = 1.00
              0.05 - 0.89 = 0.94
  1. 45.75 - 3.05 = 42.70
             45.0 - 3.00 =42.00
              0.75 - 0.05 = 0.70
  1. 75.42 - 8.58 = 68.0
             75.0 - 8.0 = 67.0
             0.42 - 0.58 = 1.0

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