Double Digit Subtraction

$5.00

We are now starting to get into slightly more difficult concepts of “borrowing” mentally. This module works on mental subtraction with double digit numbers.

Again, we are working to use mental calculation to strengthen the brain and solve for speed. After the child practices this module for 10 minutes a day for some time, they will be better than over 75% of the population at solving for double digit subtraction equations.

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