暗算 あんざん

anzan

1. Not mental calculation.; Not calculating in one's head.

1. Was mental calculation.; Was calculated in one's head.

1. Calculating mentally; In one's head

1. Mental calculation; Calculated

1. It is not mental calculation.; It's not done in one's head.

1. It's not mental calculation.; It's not done in one's head.

1. Was mental calculation.; Was calculated in one's head.

1. Mental calculation; Calculating in one's head

1. It is not mental calculation.; It is not calculation in one's head.

1. Wasn't mental calculation.; Wasn't calculating in one's head.

1. Probably a mental calculation.; Likely estimated.

1. Was not mental calculation.; Was not calculating in my head.

1. Wasn't mental calculation.; Wasn't calculating in my head.

1. Probably mental calculation.; Likely a rough estimate.

1. Was not mental calculation.; Was not done in one's head.

1. If it were mental calculation; If calculating mentally

1. If it were mental calculation; If calculating mentally

1. If/when calculating in one's head; If/when mental calculation