Marvelous Math Brain Teasers

Tomi wanted to make shoes for her dogs. She has 6 dogs, how many single shoes does she need to make?

Using my brain, even when I get an answer wrong, makes my brain stronger and helps me become smarter!

Sunflower seeds begin to sprout, 2 on day 1. If they double every day for 3 days, how many new plants do you have?

A hoodie and shoes cost $175.00 together. The hoodie cost $85.00. The shoes cost more than the hoodie.

Take 1000 and add 40 to it. Now add another 1000 to it. Now add 30. And another 1000. Now add 20. Now add another 1000.

I am an even number and factor of 16. I am less than 4, who am I?