3
88
154
By the signs: 2+2(Add) 2-2(Subtract) +=add -=subtract
18
Multiply two odd numbers Add an even and an odd Subtract an odd and an even
-76
88
154
By the signs: 2+2(Add) 2-2(Subtract) +=add -=subtract
When you subtract one number from another you get the difference.You just said it; sum.
The numbers are: 76 and 20
9 and 6 but subtract not add
28
18
Multiply two odd numbers Add an even and an odd Subtract an odd and an even
add and subtract
I believe there are 360 degrees in a quadrilateral. Depending on if the angles are even or not divide by four. But if they give you three angles add those and subtract that from 360. If they give you 2 angles and the other angles appear to be even. Add the two numbers that you have subtract that from 360 then divide by two...