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Please help me with this "logic packet" (equation tile teasers)

This is for a community college math class (MAT142 to be exact). I've attached an image with a few examples of what i'm dealing with...basically this is a 20 page, front to back packet with TONS of these problems that is worth an entire letter grade....i've taken college algebra and i'm doing trig next semester so i'm not horrible with math but i am literally guessing in the dark with these problems and it is taking me way to long to finish these...with finals coming up in 5 different classes i am really struggling to manage my time. If anyone here can at least tell me some kind of strategy for figuring these out in a reasonable amount of time i would really appreciate it.

Here are the instructions:

**For each excersize, use the numbers 0 to 9 once each to make true statements.**