On this page, you can practice the relationship or connection between addition and subtraction with interactive online exercises. If you choose one of the smaller number ranges, the script will give you either an addition or a subtraction sentence, or show you a visual model of circles, and you will then write the matching subtraction or addition... or two matching subtractions.
If you choose either the number range of 10-100 or 10-1000 (for grades 3 onward), you will still get questions that relate addition and subtraction. One type of question for these number ranges is a simple bar model with an unknown (x). You will write an addition and a subtraction equation and solve for x. Another type of question will present a simple addition or subtraction equation, and you will solve for x. Or, you might be asked to fill in the missing numbers in a subtraction equation and then write a matching addition equation.
You can choose timed or untimed practice, the number of practice problems, and the number range used in the problems.
See also this video: Subtraction and Addition in the Same Picture.
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