What is on the sheet
Page one is counting. Ten boxes hold from one to ten asteroids, mixed up, with a square in each box for the number. The rocks are outlines, so they can be colored in after.
Page two starts with five addition problems drawn as asteroids, all adding to ten or less. Under them is Blast the asteroids: a row of rocks with some already crossed out by the ship's shots, and a take-away problem to match, like 7 − 3. Kids count the rocks still standing.
The answers are printed upside down along the bottom of each page.
Ways to use it
It fits into a space unit next to the planets and the Moon. For a younger child, put a small toy or a pom-pom on each asteroid while counting, then write the number. On the take-away rows, ask how many were there before the ship fired and how many it hit. That's the whole subtraction sentence, said out loud first.
The PDF is two pages at US Letter size. Print both, or only the one that fits.
Frequently asked questions
What age is this space math worksheet for?
Page one, counting one to ten, suits preschool and kindergarten. Page two adds to ten and then takes away, which is kindergarten and first grade. Print only the page that fits.
How do kids do the take-away problems?
The blasted asteroids are already crossed out, so a child counts the ones left standing. Once that's easy, cover the X's and have them cross the rocks out themselves.
Is there an answer key?
Yes. The answers are printed upside down at the bottom of each page.
Can I copy it for my class?
Yes. Print as many as you like for a classroom, a space unit or a homeschool group. It's free, with no sign-up.
Asteroid Duel on your phone
Asteroid Duel is a space game for two players on one phone. A ship sits at each end, asteroids drift between them, and you shoot the rocks for points and the other ship to win. There's a co-op mode where you play on the same side, and you can play it in your browser too. It's free on the App Store and Google Play.
Download on the App Store ▶ Get it on Google Play
Save this sheet to Pinterest · More about Asteroid Duel
The same asteroids are on two Asteroid Duel coloring pages, and there's a trophy maze on the drawing pages. For tacos instead of rocks, try the taco math worksheet. There's more on the printables page.