Reach the desired math results in sum links, simply using logic to determine which number should add or deduct from other to get them. instead of typing, which is outdated, prepare for quick mouse movements that are going to replace simple notebook sums. with quick dragging links, connect the numbers and sum them up or down to reach the same result each stage asks for. the challenge grows harder with every successful level, but never away from the simplest way of making additions and subtractions. it's math being fun for a change, meant for the kids and also their parents.
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