Riddles for Math Centers

I am a three-digit number. My hundreds digit is 4, my tens digit is half of my ones digit, and my ones digit is 6. What number am I?

What number becomes larger when you turn it upside down?

I’m an odd number. Take one letter away and I become even. What am I?

When you add me to myself and multiply the result by three, then divide by six, you still have me. What am I?

I’m the shape with only one curved edge and no corners. What am I?

I’m a fraction equal to 3/4 with a denominator of 12. What am I?

If you skip-count by 8s starting at 16, what is the fourth number you say?

I have four sides. Two sides are longer than the others, and all angles are right angles. What shape am I?

I’m a sequence that doubles: 1, 2, 4, 8... What is the seventh term?

I am the perimeter of a square with side length 7 units. What am I?

I’m the time on the clock when the minute hand is on 6 and the hour hand is between 2 and 3. What time am I?

What weighs more: a kilogram of feathers or a kilogram of bricks?

If a baker bakes 36 cookies and packs them 9 per bag, how many bags does she fill?

I’m the product of 12 and 6, but also the sum of 70 and 2. What number am I?

I’m a prime number between 30 and 40. What am I?