Math Riddles for Kids to Love Numbers

I am an odd number. Take away a letter and I become even. What number am I?

Add me to myself and multiply by four. Divide me by eight and you will have me once more. What number am I?

I am three-digit neat. My digits add to ten and the first is three. I am even. What number could I be?

If two is company and three is a crowd, what are four and five?

I am a number that when multiplied by any other number always equals the same. What am I?

I have a face and two hands, but no arms or legs. What am I?

What has lots of keys but can only open numbers?

If you count on me you skip a few, I go by twos. What am I?

I am a number less than ten. If you multiply me by two, the answer is twelve. What number am I?

What can you add to 8 to get 4?

I am a triangle with three equal sides and angles. What shape am I?

What has a bottom at the top?

I am more than seven, less than nine, and when you flip me upside down I am still mine. What number am I?

You see me once in every minute, twice in every moment, but never in a thousand years. What am I?

Which weighs more, a pound of feathers or a pound of bricks?