Subtraction To 20
Some of the 330 modules available in the educational software products. Many of the modules allow you to vary the number sets used to further change difficulty levels. Download a 21 day free trial version. Or better still, purchase this educational software today.
The module provides a numeric and graphical representation for attempting simple subtraction with a maximum number size of 20.
Random numbers are generated and the student needs type in the answer into the ‘Answer Box’ provided.
Supports backwards number entry - refer to Configuration Settings.
The [Enter] key automatically proceeds to the next question.
Other associated modules with similar functionality include add across and down, adding 2 numbers, adding volumes, addition to 20, card addition, crossword addition, dice addition, volume challenge, subtraction to 20, subtracting 2 numbers.
Other common terms are addition, addition of numbers, mathematics addition, adding numbers, number sums.