Multiply by rules to figure out answer rags to riches.

Using these 3 rules, figure out the answer WITHOUT doing the math. Anything times 2 HAS to end in an even number (2,4,6,8,0)
Anything times 5 HAS to end in an either a 5 or a 0. Ex. 5 × 4 =20
Anything times 10 HAS to end in a 0.