Used mental strategies to add the two numbers on a number line 45+48 =

asked Jul 2, 2017 52.0k views

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In your head you can think 40 as 4 and then add 4+4 which equals 8 so then 40+40= 80 then 5+8=13 so then 80+13=93

Steffen Brem answered Jul 6, 2017

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