Practice subtraction up to 20Subtraction
Subtraction up to 20
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Time per question:
Here you can practice subtraction sums up to 20, level 20. Set how much time you want to have to do the sum and how many sums you want to practice in a row. You can also indicate whether you want multiple choice answers for the sums or not. Learn subtraction up to 20 here. Some example sums are: 18 – 3 = 15 14 – 8 = 6 By lowering the number of seconds for each exercise, it becomes more difficult to give the right answer. This way you can slowly increase the difficulty level. The subtraction sums up to 20 are part of second-grade arithmetic. By completing the sums with a timer, it will help you practice for a timed test. You can also choose longer series of sums to do more exercises in a row.