Keywords: abacus hat beads subtraction subtract difference computation indoor abacus hat beads subtraction subtract difference computation indoor I'm now subtracting 3 in the 3rd position from the left. This is done in 2 steps: subtract 5, add 2. In this step I add 2. CC0 waiver: To the extent possible under law, I waive all copyright and related or neighboring rights to this work. I'm now subtracting 3 in the 3rd position from the left. This is done in 2 steps: subtract 5, add 2. In this step I add 2. CC0 waiver: To the extent possible under law, I waive all copyright and related or neighboring rights to this work. I'm now subtracting 3 in the 3rd position from the left. This is done in 2 steps: subtract 5, add 2. In this step I add 2. CC0 waiver: To the extent possible under law, I waive all copyright and related or neighboring rights to this work. I'm now subtracting 3 in the 3rd position from the left. This is done in 2 steps: subtract 5, add 2. In this step I add 2. CC0 waiver: To the extent possible under law, I waive all copyright and related or neighboring rights to this work. |