I cant type numbers on my keyboard?

before you tell me to hit the num lock key its not exactly not letting me type numbers but when i hit the number it types the character above it instead> and if you noticed the arrow there thats because i tried to type a period>i"m typing in caps lock right now because i have to type in caps lock to type in lower case> also its not the keyboard i just bought a new one plugged it in and its still doing this anyone who would like to help i would be very thankful best answer to the solution givin that works> oh one more thing when i use the scroll on on my mouse it goes back?forward