It’s that time of year when Americans have to pick out their Halloween costumes. There are always lots of ghosts, witches and princesses. But the world has a lot more costume ideas for you. So we’re loving this webpage of wacky costumes invented by clever kids. Our favorite might be the vending machine shown here: it’s going to end up full of candy anyway, so why not start off that way? The page also shows kids dressed up as sushi, a glowing stick person, and a working Transformer that switches from car to robot and back. One kid turned his wheelchair into an amazing backhoe. Another became a walking penny, and another dressed up as the family cat. As we’ll see, the great ideas add up.
Wee ones: If the Transformer becomes a car, then a robot, then a car, then a robot…what comes next?
Little kids: If the walking vending machine has 3 rows of snacks with 3 snacks in each, how many snacks are there in total? Bonus: If you reached into that costume and cleared out 4 of the snacks, how many would be left?
Big kids: The “Grandma baby” is wearing rows of cotton balls to look like curly white hair. If there are exactly 9 balls in each row, could she have 36 in total? Bonus: If the sushi girl gets 30 pieces of candy while trick-or-treating, the penny gets 54 piece, and the walking piñata gets the number exactly halfway between, how many treats does the piñata get?
Wee ones: A car.
Little kids: 9 snacks. Bonus: 5 snacks.
Big kids: Yes. All multiples of 9 have digits that add up to a multiple of 9! Bonus: 42 pieces, since 30 and 54 are 24 apart, the number halfway will be 12 away from each.