This file includes 2 different activities that are great for your maths warm ups.
Activity 1: Missing Numbers 20-1 - Print off all of the cards and laminate. I printed 2 to a page to make them a bit smaller. There are 21 different cards included. Each card has 9 numbers missing for students to work out and write on using a whiteboard marker.
If you want to use these as activity sheets, just print and not laminate. They can be used as exit slips, just print them 4 to a page to shrink them.
Activity 2: 20 - 1 tracing mats - Choose the version you would like to use, print and laminate and they are ready to go. I printed 2 per page and laminated them back to back with a missing number page. The students can then use the tracing page as a check once they have finished filling in the missing numbers, or it can help them if they are having trouble.
There is another free product in my store concentrating on counting forwards 1-20.
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