Basic Subtraction Level 1Test your subtraction skills with this selfmarking exercise to be completed without a calculator. 
Take your time, do your best. If you get stuck on one, just try the rest!
This is Basic Subtraction Level 1. You can also try:
Level 2
Level 3
Level 4
Level 5
Level 6
Level 7
Level 8
Basic Addition  Basic Multiplication  Basic Division  Beat The Clock
InstructionsTry your best to answer the questions above. Type your answers into the boxes provided leaving no spaces. As you work through the exercise regularly click the "check" button. If you have any wrong answers, do your best to do corrections but if there is anything you don't understand, please ask your teacher for help. When you have got all of the questions correct you may want to print out this page and paste it into your exercise book. If you keep your work in an ePortfolio you could take a screen shot of your answers and paste that into your Maths file. 



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Go MathsLearning and understanding Mathematics, at every level, requires learner engagement. Mathematics is not a spectator sport. Sometimes traditional teaching fails to actively involve students. One way to address the problem is through the use of interactive activities and this web site provides many of those. The Go Maths page is an alphabetical list of free activities designed for students in Secondary/High school. Maths MapAre you looking for something specific? An exercise to supplement the topic you are studying at school at the moment perhaps. Navigate using our Maths Map to find exercises, puzzles and Maths lesson starters grouped by topic.  
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Level 1  Subtracting single digit numbers mentally [e.g. 9 − 3]
Level 2  Subtracting numbers up to 20 [e.g. 15 − 10]
Level 3  Subtracting numbers up to 60 without decomposition [e.g. 36 − 12]
Level 4  Subtracting numbers up to 60, decomposition required [e.g. 41 − 29]
Level 5  Subtracting numbers up to 99 [e.g. 63 − 25]
Level 6  Subtracting numbers up to 999 without decomposition of zero [e.g. 823 − 465]
Level 7  Subtracting numbers where the problem of decomposition of zero is presented [e.g. 605 − 439]
Level 8  Mixed subtractions [e.g. 4201  986]
More on this topic including lesson Starters, visual aids, investigations and selfmarking exercises.
Answers to this exercise are available lower down this page when you are logged in to your Transum account. If you don’t yet have a Transum subscription one can be very quickly set up if you are a teacher, tutor or parent.
See the National Curriculum page for links to related online activities and resources.
See the Formal Written Methods page for examples showing how calculations can be set out.
Don't wait until you have finished the exercise before you click on the 'Check' button. Click it often as you work through the questions to see if you are answering them correctly. You can doubleclick the 'Check' button to make it float at the bottom of your screen.
Answers to this exercise are available lower down this page when you are logged in to your Transum account. If you don’t yet have a Transum subscription one can be very quickly set up if you are a teacher, tutor or parent.
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Howie Hua, Twitter
Saturday, February 4, 2023
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