Question

Marla has three secret code cards. The first shows a 37. The second card has the first box blanked out, and the second box is a 2. The two code cards together equal the third card,which is 59. What is the missing number?. This is the word problem for 2nd grade math
Ms. Sue
59 - 37 = 22
Just add 37+2=39 and then subtract 39 from 59. =10
add 3yds, 16 inches,+ 6yds, 54 inches
Ms.Sue: don't understand question

JL:37-2=39,then-59=10
same as (37+-2=39)-59=10

59-37=22 22-2=20

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