Maths Reflection Week 5

This week for Maths I have learnt the name of 3 different strategies: Place Value, adding using tidy numbers and subtracting using tidy numbers. I also learnt how to use the most efficient strategy to solve a number problem.

Place Value strategy
Example: 75-39=?
75-30-9
75-30=45
45-9=36
Adding using tidy number strategy
Example: 247+98=?
247+100-3
247+100=347-2= 345

Subtracting using tidy numbers strategy:
473-146=?
+4   +4
473-146 = 477-150=327