Teachers guide books B-G. ... Example: 28 + 27 20 + 20 + 8 + 2 + 5 is 55 Note: There are many different strategies a student might use to calculate the answer to this problem. Example: ... At the later stages of Levels D and E, addition and subtraction facts should be known and these in turn may be used to derive ... For example, knowledge of a simple fact such as 5 x 6 = 30 can be used to calculate 7x6.
|Title||:||New Wave Mental|
|Publisher||:||R.I.C. Publications - 2005|