Tidy numbers Term 3

 I have been learning how to subtract tidy  numbers  because it is easier to solve any subtraction or 
multiplication.

In my maths hub Te Kauru Nui  we are learning to use strategy like tidy number

lets try an equation like {4-47 = }so what you do is you round it to the nearest tidy number so in this case you would have to add 3 to the 47 and the 4 so that would be 50-1=49 and that would be your answer