Subtracting with tidy number

This week we were learning to solve problems by equal additions that turn one of the numbers into a tidy number.

E.g 183-68=68+2=70-100=30+80+5=115 if you want to know if your answer is right you add 115 to the

68=60+8 +100+10+5=100+60+160+10=170+5=175+8=183

Maths Activity

This week Ive been learning the reversibility strategy for example: 137-69 then you reverse it 69+something=137=69+1=70then70+30=100then 100+30=130+7 then you add the 1 , 30 ,30 and 7 then you add them all together and you have your answer. I am confident in using this strategy

Maths Activity

This is a task where I tested myself to see how long
it would take me to complete. It also helped me with my knowledge of my timetables.