The following expressions correctly use mental math to find 4x59:
(4x60)-(4x1)
4x(50x9)
(4x50)+(4x9)
4+50+9
Which of the following expressions correctly use mental math to find 4x59 all that apply. (4x60)-(4x1) 4x(50x9) 4+(50x9) (4x50)+(4x9) 4+50+9
1 answer
1 answer