Press here to CLOSE XInstructions for Negative Number Math

Click on a negative numbers flash card to do subtraction, multiplication, or division with negative numbers. Then, just type in the answer. Remember the negative sign if the answer is a negative number. If your answer is correct, it will change color. If it doesn't change color use BACKSPACE to erase the answer and try again. Click on the arithmetic card or press the ENTER key to flip it.

For negative number division and multiplication, you can set the biggest (and smallest) number to be divided or multiplied by clicking on a number below the card.

Click on the check mark at the bottom to keep score! You can choose the number of problems by clicking up and down by the 25 default. Then type in the answer and click the card to flip it. The left counter increases for each correct answer; the right counter counts the number of cards you've done. If the answer isn't right, the correct answer will display to the right of the counter when you flip the card. When you're done, your score will be shown on the screen.

When doing a stack of negative number flash cards, click the math teacher's apple to return to Mr. Martini's negative numbers home page.

Another negative number math tool is available on Mr. Martini's long arithmetic home page. It is used to practice vertical subtraction to negative numbers and its difficulty can be set from one to five digits.

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