Warning: Some of these sites do contain questions involving negative numbers at times. You DO NOT NEED to learn about them for now. In such cases you may wish to skip them. If you wish to find out how they can be solved, scroll to the bottom of this post.
Website for filling in the operations to get the target number. Comes with increasing difficulty.
http://www.funbrain.com/algebra/index.html
Site for generating questions on order of operations
http://www.scienceacademy.com/BI/
Site for two player game of tic-tac-toe with questions
http://www.shodor.org/interactivate/activities/OrderOfOperationsFou/
Website for multiplication and addition
http://www.slidermath.com/integer/OrdOps1.shtml
Website for multiplication and subtraction
http://www.slidermath.com/integer/OrdOps2.shtml
Website for division and addition
http://www.slidermath.com/integer/OrdOps3.shtml
OPTIONAL
Negative numbers: think of the number line being mirrored at zero.
eg. -3, -2, -1, 0, 1, 2, 3
(Use a calculator to test the following out! for negative numbers, press the small "-" sign above the "RCL" key on your calculator)
1)adding a positive number and a negative number, eg. 9 + (-5) is the same as subtracting from the positive number eg. 9-5 =4
2) subtracting a negative number from a negative number, eg. (-3) - (-5) is the same as adding to the first negative number. (-3)+5 = 2
Using calculators, can you find out the rules of multiplying and dividing by negative numbers? ;)
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