Which of the following makes $4$4?
There may be more than one correct answer.
$11-9$11−9
$10-6$10−6
$0+4$0+4
$6-2$6−2
Which of the following makes $16$16?
There may be more than one correct answer.
Which of the following makes $18$18?
There may be more than one correct answer.
Which of the following makes $15$15?
There may be more than one correct answer.