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The Sum Machine

The Sum Machine

Purpose of the tool

A machine to calculate all kinds of sums.

Grade: 1,2,3,4,5
Common core standards: 
MP4 MP5 1.OA.C.6 1.NBT.C.4 2.NBT.B.5 2.NBT.B.6 2.NBT.B.7 2.NBT.B.9 3.OA.A.2 3.OA.C.7 3.NBT.A.2 4.NBT.B.4 4.NBT.B.5

Explanation of the tool

At the top of the screen you can enter the type of sums you would like to display on screen. You can choose between -, +, x and : sums.

At the right side of the screen there are several other options.

You can choose between 10, 20 or 30 sums.

You can select a maximum solution of a sum. If you enter a zero, the Sum Machine will decide for you.

The other buttons involve decimal crossing and division sums, and you can decide whether or not to use that function.

When you've made a selection and want to see the sums, press the 'Do the math' button.

The sums appear on screen.
In order to enter a solution, please use the blue key button. You'll see it next to the area where you can enter the solution.
To check your answer, press the ?! button.
When all solutions have been entered, you can press the 'Check all' button at the top of the screen.

If you want to view other sums, press the 'Back' button.