This week during Maths I have been learning to use tidy numbers to solve mathematical problems.
Tidy numbers are numbers that end with 0.
Here is a example.
84 + ? = 104
I then add 6 to 84 = 90
90 + 10 = 100
add 4 = 104
6 + 10 + 4 = ?
6 + 4 = 10 + 10 = 20
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